CVE-2025-54887

Description

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.

Is your site exposed to CVE-2025-54887?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness Type (CWE)

CWE-354 CWE-354

References

Other References

https://github.com/jwt/ruby-jwe/commit/1e719d79ba3d7aadaa39a2f08c25df077a0f9ff1 https://github.com/jwt/ruby-jwe/security/advisories/GHSA-c7p4-hx26-pr73

Frequently Asked Questions

What is 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 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. It has a CVSS v3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2025-54887? +

CVE-2025-54887 has a CVSS v3.1 score of 9.1 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

How do I check if I'm vulnerable to CVE-2025-54887? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-11694

A security issue exists within 1769 CompactLogix controllers due to the missing validation of sequence numbers and source IP addresses …

CVE-2024-7402

Netskope has identified a potential gap in its agent (Netskope Client) in which a malicious insider can potentially tamper the …

CVE-2024-48930

secp256k1-node is a Node.js binding for an Optimized C library for EC operations on curve secp256k1. In `elliptic`-based version, `loadUncompressedPublicKey` …

CVE-2025-4616

An insufficient validation of an untrusted input vulnerability in Palo Alto Networks Prisma® Browser allows a locally authenticated non-admin user …

CVE-2024-25678 9.8

In LiteSpeed QUIC (LSQUIC) Library before 4.0.4, DCID validation is mishandled.

CVE-2025-11543 9.8

Improper Validation of Integrity Check Value vulnerability in Sharp Display Solutions projectors allows a attacker may create and run unauthorized …