Vulnerability in Jwt Ruby-jwe
CVE-2025-54887
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…
EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Jwt Ruby-jwe — versions < 1.1.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-54887?
- CVE-2025-54887 is a critical-severity vulnerability in Jwt Ruby-jwe, classified under Improper Validation of Integrity Check Value. CVSS score: 9.1/10. Published 2025-08-08.
- How severe is CVE-2025-54887?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2025-54887 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.