CVEvulnerability
CVE-2026-89043
9.1 CRITICAL
Official page ↗
- Status
- Deferred
- Published
- 2026-09-10
- Last modified
- 2026-09-10
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 9.1 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-347
Description
passport-saml-encrypted through 0.1.13 contains an XML signature wrapping vulnerability where signature verification and assertion extraction use independent XPath lookups with no cross-validation. Attackers holding any validly signed SAML message can prepend a forged unsigned assertion that gets accepted as the verified identity while the genuine signature validates against the original assertion.
Related
Weakness · CWE (1)
- CWE-347 Improper Verification of Cryptographic Signature weakness
References
- https://github.com/krakenjs/passport-saml-encrypted github.com
- https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L256 github.com
- https://github.com/krakenjs/passport-saml-encrypted/blob/v0.1.13/lib/saml.js#L328 github.com
- https://github.com/krakenjs/passport-saml-encrypted/issues/30 github.com
- https://www.vulncheck.com/advisories/passport-saml-encrypted-through-0.1.13-xml-signature-wrapping-via-assertion-prepending www.vulncheck.com
- https://github.com/krakenjs/passport-saml-encrypted/issues/30 github.com