CVE Feed

    Dashboard / CVE / CVE-2026-89086

    CVE-2026-89086

    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.

    Published:Sep 10, 2026
    Last Modified:Sep 13, 2026
    EPS:Sep 10, 2026
    EPSS Score:0.00198
    CVSS Score:9.1

    Affected Products

    Vendor
    Ocaml
    Product
    Jose

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High