What is GHSA-89v8-3927-wfcg?

GHSA-89v8-3927-wfcg is a security advisory published by GitHub Security Advisories with Medium severity. The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the...

Which CVE IDs does GHSA-89v8-3927-wfcg cover?

GHSA-89v8-3927-wfcg covers the following CVE IDs: CVE-2026-6330. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-89v8-3927-wfcg?

GHSA-89v8-3927-wfcg has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-89v8-3927-wfcgMediumCVSS 6.5

The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the...

Vendor

GitHub Security Advisories

Published

June 26, 2026

Last Modified

June 27, 2026

🔗 CVE IDs covered (1)

CVE-2026-6330 →

📋 Description

The ML-KEM ARM64 NEON ciphertext comparison only compares half of the input, breaking the Fujisaki-Okamoto transform's implicit rejection and weakening IND-CCA2 security on that code path. The constant-time comparison effectively ignored part of the re-encrypted ciphertext, so a decapsulating party could fail to detect a manipulated ciphertext and proceed without the standard's required implicit rejection.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-6330
https://github.com/wolfSSL/wolfssl/pull/10192
https://www.wolfssl.com/docs/security-vulnerabilities
https://github.com/advisories/GHSA-89v8-3927-wfcg