Starlette < 1.0.1 is affected by CVE-2026-48710 ("BadHost", CWE-444).
The HTTP Host header was not validated before being used to rebuild
`request.url`, so a malformed Host could make `request.url.path` desync
from the raw ASGI path the router actually dispatched. Middleware and
endpoints that apply path-based authorization off `request.url` (rather
than `scope["path"]`) can therefore be bypassed.
Hermes pulls Starlette transitively, never directly:
- [web] -> fastapi==0.133.1 (starlette>=0.40.0, no upper bound)
- [mcp] -> mcp==1.26.0 + sse-starlette (starlette>=0.27 / >=0.49.1)
- [computer-use] -> mcp==1.26.0
- [dev] -> mcp==1.26.0
A fresh resolve landed starlette 0.52.1 — vulnerable. With no upper
bound on the transitive specs, pip/uv could resolve any pre-1.0.1
release on a fresh install.
Fix: pin starlette==1.0.1 directly in every extra that exposes a
Starlette-backed server surface, regenerate uv.lock (only starlette
moves: 0.52.1 -> 1.0.1, hash-verified), and mirror the pin in the
lazy-install map (tools/lazy_deps.py `tool.dashboard`) so `hermes`
on-demand dashboard installs can't re-resolve a vulnerable version.
1.0.1 is the advisory's named fix floor and the oldest patched release
(more bake time than 1.1.0/1.2.0, which are days old); it satisfies
every carrier constraint and our requires-python>=3.11.
Scope note: this is a dependency-level fix complementing the
application-layer Host-header validator added in #34162
(`hermes_cli/web_server.py` `_is_accepted_host`). Defense in depth at
both the framework and app layers.
Guards: two invariant tests in tests/test_packaging_metadata.py assert
every server-surface extra pins starlette and that pyproject + uv.lock
both resolve >= the 1.0.1 CVE floor — a dropped pin or stale lock fails
in CI instead of shipping the bypass.
Closes #35067
203 lines
8.8 KiB
Python
203 lines
8.8 KiB
Python
from pathlib import Path
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import tomllib
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import pytest
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# setuptools is declared in the [dev] extra and is the build backend, but
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# guard the import so a runner without it skips these packaging checks
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# instead of erroring out collection for the whole shard (it used to be
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# picked up ambiently from the CI image; newer ubuntu-latest images don't
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# ship it in the test venv).
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find_packages = pytest.importorskip("setuptools", exc_type=ImportError).find_packages
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REPO_ROOT = Path(__file__).resolve().parents[1]
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def _packages_find_include():
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data = tomllib.loads((REPO_ROOT / "pyproject.toml").read_text(encoding="utf-8"))
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return data["tool"]["setuptools"]["packages"]["find"]["include"]
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def test_every_on_disk_subpackage_is_covered_by_packages_find():
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"""Regression test for #34701 (and the bug class behind #34034 / #28149).
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``[tool.setuptools.packages.find]`` ``include`` is hand-maintained. Every
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top-level package is listed twice — bare (``hermes_cli``) for the package
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itself and ``hermes_cli.*`` for its subpackages — EXCEPT when someone
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forgets the wildcard. v0.15.x listed ``hermes_cli`` without ``hermes_cli.*``,
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so the wheel shipped ``hermes_cli/*.py`` but dropped the ``dashboard_auth``
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and ``proxy`` subpackages. The dashboard then died on every install with
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``ModuleNotFoundError: No module named 'hermes_cli.dashboard_auth'``.
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This drives setuptools' own discovery against the live tree: every package
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that exists on disk and would be found by a permissive ``<name>.*`` scan
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must also be found by the actual ``include`` list. A subpackage added under
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any listed package without the matching wildcard fails here instead of in a
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user's container.
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"""
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include = _packages_find_include()
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# What the real include list actually selects.
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selected = set(find_packages(where=str(REPO_ROOT), include=include))
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# Top-level packages we ship (bare names in the include list, no wildcard).
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top_level = sorted({name for name in include if "." not in name})
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# For each shipped top-level package, every on-disk subpackage must be
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# covered by the include list.
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expected = set(
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find_packages(
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where=str(REPO_ROOT),
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include=[pattern for name in top_level for pattern in (name, f"{name}.*")],
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)
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)
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missing = sorted(expected - selected)
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assert not missing, (
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"These packages exist on disk but are dropped from the wheel because "
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"[tool.setuptools.packages.find] include is missing a wildcard. Add the "
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f"matching '<name>.*' entry in pyproject.toml: {missing}"
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)
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def test_faster_whisper_is_not_a_base_dependency():
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data = tomllib.loads((REPO_ROOT / "pyproject.toml").read_text(encoding="utf-8"))
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deps = data["project"]["dependencies"]
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assert not any(dep.startswith("faster-whisper") for dep in deps)
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voice_extra = data["project"]["optional-dependencies"]["voice"]
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assert any(dep.startswith("faster-whisper") for dep in voice_extra)
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def test_manifest_includes_bundled_skills():
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manifest = (REPO_ROOT / "MANIFEST.in").read_text(encoding="utf-8")
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assert "graft skills" in manifest
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assert "graft optional-skills" in manifest
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def test_bundled_plugin_manifests_ship_in_both_wheel_and_sdist():
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"""Regression test for #34034 / #28149.
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Plugin discovery (hermes_cli/plugins.py) registers each bundled plugin by
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reading its ``plugin.yaml`` / ``plugin.yml`` manifest. Those manifests are
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data files, not Python modules, so they only reach installed packages when
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declared explicitly:
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- wheel -> ``[tool.setuptools.package-data]`` ``plugins`` glob
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- sdist -> ``MANIFEST.in`` (Homebrew and other downstream packagers build
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from the sdist)
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v0.15.0 declared neither, so the wheel shipped every adapter's Python code
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but none of its manifests, and *every* gateway platform failed with
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"No adapter available for <platform>". Both channels must cover manifests.
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"""
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# There must actually be manifests on disk for the globs to match.
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on_disk = list((REPO_ROOT / "plugins").rglob("plugin.yaml")) + list(
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(REPO_ROOT / "plugins").rglob("plugin.yml")
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)
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assert on_disk, "expected bundled plugin manifests under plugins/"
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# Wheel channel: package-data must declare a glob that matches plugin
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# manifests anywhere under the plugins package.
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data = tomllib.loads((REPO_ROOT / "pyproject.toml").read_text(encoding="utf-8"))
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plugins_pkg_data = data["tool"]["setuptools"]["package-data"].get("plugins", [])
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assert any(
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g.endswith("plugin.yaml") or g.endswith("plugin.yml")
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for g in plugins_pkg_data
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), "pyproject package-data 'plugins' must ship plugin.yaml/plugin.yml (wheel)"
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# Sdist channel: MANIFEST.in must recursively include the manifests so
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# downstream packagers building from the sdist also get them.
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manifest = (REPO_ROOT / "MANIFEST.in").read_text(encoding="utf-8")
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assert "recursive-include plugins" in manifest and "plugin.yaml" in manifest, (
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"MANIFEST.in must recursive-include plugins plugin.yaml/plugin.yml (sdist)"
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)
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# Minimum non-vulnerable Starlette: CVE-2026-48710 ("BadHost") was fixed in
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# 1.0.1. Anything below that lets a malformed Host header desync
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# ``request.url.path`` from the dispatched ASGI path, bypassing path-based
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# authz in middleware/endpoints that gate on ``request.url``. Starlette is a
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# transitive dep (fastapi in [web]; sse-starlette/mcp in [mcp]/[computer-use]/
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# [dev]) so we pin it directly in every extra that exposes a server surface and
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# enforce the floor in both pyproject and the committed lockfile.
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_STARLETTE_CVE_FLOOR = (1, 0, 1)
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def _version_tuple(spec: str) -> tuple[int, ...]:
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# "1.0.1" -> (1, 0, 1); tolerant of pre/post suffixes by truncating.
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head = spec.split("+", 1)[0]
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parts = []
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for chunk in head.split("."):
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digits = "".join(ch for ch in chunk if ch.isdigit())
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if not digits:
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break
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parts.append(int(digits))
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return tuple(parts)
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def test_starlette_pinned_above_cve_2026_48710_floor_in_pyproject():
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"""Every extra that declares Starlette must pin a patched (>=1.0.1) version.
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Regression guard for #35067 / CVE-2026-48710. A future edit that drops the
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pin (re-exposing the unbounded transitive ``starlette>=0.27`` from mcp /
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``>=0.40.0`` from fastapi) or pins a pre-1.0.1 version fails here instead of
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shipping a Host-header auth-bypass to dashboard / MCP-HTTP users.
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"""
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data = tomllib.loads((REPO_ROOT / "pyproject.toml").read_text(encoding="utf-8"))
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extras = data["project"]["optional-dependencies"]
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found = {}
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for extra, specs in extras.items():
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for spec in specs:
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name = spec.split("==", 1)[0].split(">", 1)[0].split("<", 1)[0].split("[", 1)[0].strip()
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if name.lower() == "starlette":
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assert "==" in spec, f"[{extra}] must exact-pin starlette, got {spec!r}"
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ver = spec.split("==", 1)[1].split(";", 1)[0].strip()
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found[extra] = ver
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# The four server-surface extras must each carry the direct pin.
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for extra in ("web", "mcp", "computer-use", "dev"):
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assert extra in found, (
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f"[{extra}] no longer pins starlette directly — CVE-2026-48710 "
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f"regression risk (mcp/fastapi pull it transitively with no upper bound)"
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)
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for extra, ver in found.items():
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assert _version_tuple(ver) >= _STARLETTE_CVE_FLOOR, (
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f"[{extra}] pins starlette=={ver}, below the CVE-2026-48710 fix "
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f"floor {'.'.join(map(str, _STARLETTE_CVE_FLOOR))}"
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)
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def test_locked_starlette_is_not_vulnerable_to_cve_2026_48710():
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"""The committed uv.lock must resolve starlette to a patched version.
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pyproject pins protect the declared extras, but the lockfile is what
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hash-verified installs (``uv sync --locked``) actually pull. Assert the
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resolved version is >= the CVE-2026-48710 fix floor so a stale-lock
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regression can't ship a vulnerable Starlette to users.
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"""
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lock = (REPO_ROOT / "uv.lock").read_text(encoding="utf-8")
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versions = []
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in_starlette = False
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for line in lock.splitlines():
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if line.startswith("[[package]]"):
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in_starlette = False
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elif line.strip() == 'name = "starlette"':
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in_starlette = True
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elif in_starlette and line.startswith("version = "):
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versions.append(line.split("=", 1)[1].strip().strip('"'))
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in_starlette = False
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assert versions, "starlette not found in uv.lock"
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for ver in versions:
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assert _version_tuple(ver) >= _STARLETTE_CVE_FLOOR, (
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f"uv.lock resolves starlette=={ver}, below the CVE-2026-48710 fix "
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f"floor {'.'.join(map(str, _STARLETTE_CVE_FLOOR))} — regenerate the "
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f"lockfile after bumping the pin"
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)
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