CVE-2026-89086
CriticalCVSS 9.1Summary
In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.
Risk Assessment
An attacker can forge RSA signatures and bypass JOSE-based authentication mechanisms, leading to unauthorized access.
Recommendation
Upgrade the jose package for OCaml to version 0.11.0 or later.
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Original NVD description (English source)
In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.