GHSA-hc3c-63hc-2r9f: libcrux: Potential Panic on Overlong Ciphertext Buffer

May 19, 2026

An application that passes in a ciphertext buffer of length greater than ptxt.len() + TAG_LEN to libcrux_chacha20poly1305::encrypt or libcrux_chacha20poly1305::xchacha20_poly1305::encrypt would experience a panic.

References

github.com/advisories/GHSA-hc3c-63hc-2r9f
github.com/cryspen/libcrux/pull/1386
rustsec.org/advisories/RUSTSEC-2026-0124.html

Code Behaviors & Features

Detect and mitigate GHSA-hc3c-63hc-2r9f with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →