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🐍 PyPI

GHSA-c2vx-49jm-h3f6

HIGH

GHSA-c2vx-49jm-h3f6 is a high-severity (CVSS 7.5) XML External Entity (XXE) vulnerability in pysaml2. O3 Security confirms whether GHSA-c2vx-49jm-h3f6 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Pysaml2 does not sanitize XML responses

Also known asCVE-2016-10149PYSEC-2017-25
Published
Jul 16, 2018
Updated
Oct 21, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐍pysaml2

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML request or response.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIpysaml2all versions4.5.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pysaml2. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update pysaml2 to 4.5.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-c2vx-49jm-h3f6 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-c2vx-49jm-h3f6 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-c2vx-49jm-h3f6. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAML XML request or response.
O3 Security · Impact-Aware SCA

Is GHSA-c2vx-49jm-h3f6 in your dependencies?

O3 detects GHSA-c2vx-49jm-h3f6 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.