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    CVE-2025-46551

    JRuby-OpenSSL is an add-on gem for JRuby that emulates the Ruby OpenSSL native library. Starting in JRuby-OpenSSL version 0.12.1 and prior to version 0.15.4 (corresponding to JRuby versions starting in 9.3.4.0 prior to 9.4.12.1 and 10.0.0.0 prior to 10.0.0.1), when verifying SSL certificates, JRuby-OpenSSL does not verify that the hostname presented in the certificate matches the one the user tries to connect to. This means a man-in-the-middle could just present any valid cert for a completely different domain they own, and JRuby would accept the cert. Anybody using JRuby to make requests of external APIs, or scraping the web, that depends on https to connect securely. JRuby-OpenSSL version 0.15.4 contains a fix for the issue. This fix is included in JRuby versions 10.0.0.1 and 9.4.12.1.

    Published:May 7, 2025
    Last Modified:Oct 21, 2025
    EPS:May 7, 2025
    EPSS Score:0.00025
    CVSS Score:3.7

    Affected Products

    Vendor
    Jruby
    Product
    Jruby
    Vendor
    Jruby
    Product
    Jruby-openssl

    Exploits

    https://github.com/jruby/jruby-openssl/security/advisories/GHSA-72qj-48g4-5xgxhttps://github.com/jruby/jruby-openssl/security/advisories/GHSA-72qj-48g4-5xgx

    Common Weakness Enumeration

    CWE-295 Improper Certificate 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