SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass
High-risk advisory
CVE-2026-49283
Summary
SimpleSAMLphp HTTP-Artifact TLS validator confusion allows cross-IdP authentication bypass
Why it matters
GitHub has published a reviewed security advisory for simplesamlphp/saml2. Prioritize it with other application dependency updates.
Operator check
Check whether simplesamlphp/saml2 is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.