CVE-2026-89043
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.1
- CVSS vector
- 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
- CWE
- CWE-347
- Published
- 2026-09-10
- Last modified
- 2026-09-10
Affected products
- krakenjs passport-saml-encrypted
Weakness type
Related vulnerabilities
- CVE-2026-89086 — In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only...
- CVE-2026-89042 — passport-saml-encrypted through 0.1.13 Authentication Bypass via Missing Signature Verification
- CVE-2023-54355 — PocketMine-MP 5.2.0 Server Crash via Incorrect EC Curve
- CVE-2026-79970 — Dell SCG 5.0 Appliance versions prior to 5.36.00.16 and Dell SCG 5.0 Application versions prior to...
- CVE-2026-56207 — Apache Impala: SAML authentication bypass via forged bearer token
- CVE-2026-87732 — An issue was discovered in the mirage-crypto package before 2.2.0 for OCaml. The...
- CVE-2026-86080 — n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verification to Fail-Open
- CVE-2026-69646 — Skype for Business Spoofing Vulnerability