CVE-2025-54887 (GCVE-0-2025-54887)
Vulnerability from cvelistv5
Published
2025-08-08 00:06
Modified
2025-08-08 16:43
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-354 - Improper Validation of Integrity Check Value
Summary
jwe is a Ruby implementation of the RFC 7516 JSON Web Encryption (JWE) standard. In versions 1.1.0 and below, authentication tags of encrypted JWEs can be brute forced, which may result in loss of confidentiality for those JWEs and provide ways to craft arbitrary JWEs. This puts users at risk because JWEs can be modified to decrypt to an arbitrary value, decrypted by observing parsing differences and the GCM internal GHASH key can be recovered. Users are affected by this vulnerability even if they do not use an AES-GCM encryption algorithm for their JWEs. As the GHASH key may have been leaked, users must rotate the encryption keys after upgrading. This issue is fixed in version 1.1.1.
References
security-advisories@github.comhttps://github.com/jwt/ruby-jwe/commit/1e719d79ba3d7aadaa39a2f08c25df077a0f9ff1
security-advisories@github.comhttps://github.com/jwt/ruby-jwe/security/advisories/GHSA-c7p4-hx26-pr73
Impacted products
Vendor Product Version
jwt ruby-jwe Version: < 1.1.1
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