GHSA-5j8p-438x-rgg5
SAML PHP Toolkit Vulnerability on xmlseclibs CVE-2025-66475
Blast Radius
onelogin/php-saml🐘onelogin/php-saml🐘onelogin/php-samlReal-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
Summary
There is a critical vulnerability on xmlseclibs CVE-2025-66475, a dependency of php-saml
Update to the following versions of php-saml which forces the use of patched versions of xmlseclibs:
Impact
Signature Wrapping Vulnerabilities allows an attacker to impersonate a user.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | onelogin/php-saml | all versions | 2.21.1 |
| 🐘Packagist | onelogin/php-saml | ≥ 3.0.0&&< 3.8.1 | 3.8.1 |
| 🐘Packagist | onelogin/php-saml | ≥ 4.0.0&&< 4.3.1 | 4.3.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for onelogin/php-saml. 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 onelogin/php-saml to 2.21.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5j8p-438x-rgg5 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-5j8p-438x-rgg5 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-5j8p-438x-rgg5. 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-5j8p-438x-rgg5 in your dependencies?
O3 detects GHSA-5j8p-438x-rgg5 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.