GHSA-pqm6-cgwr-x6pf
HIGHGHSA-pqm6-cgwr-x6pf is a high-severity (CVSS 8.8) CWE-347 vulnerability in robrichards/xmlseclibs. O3 Security confirms whether GHSA-pqm6-cgwr-x6pf is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Signature validation bypass in XmlSecLibs
Blast Radius
robrichards/xmlseclibs🐘robrichards/xmlseclibsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
Rob Richards XmlSecLibs, all versions prior to v3.0.3, as used for example by SimpleSAMLphp, performed incorrect validation of cryptographic signatures in XML messages, allowing an authenticated attacker to impersonate others or elevate privileges by creating a crafted XML message.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | robrichards/xmlseclibs | ≥ 3.0.0&&< 3.0.4 | 3.0.4 |
| 🐘Packagist | robrichards/xmlseclibs | ≥ 1.0.0&&< 2.1.1 | 2.1.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for robrichards/xmlseclibs. 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.
Fix
Update robrichards/xmlseclibs to 3.0.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pqm6-cgwr-x6pf is resolved across your whole dependency graph.
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.
How O3 protects you
O3 pinpoints whether GHSA-pqm6-cgwr-x6pf 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-pqm6-cgwr-x6pf. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-pqm6-cgwr-x6pf in your dependencies?
O3 detects GHSA-pqm6-cgwr-x6pf across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.