Rust advisories / libcrux-ed25519
Vulnerability LowRUSTSEC-2026-0026 · libcrux-ed25519
RUSTSEC-2026-0026: Unnecessary clamping of seed reduces seed entropy to 251 bits
Short answerA security vulnerability in the libcrux-ed25519 crate: Unnecessary clamping of seed reduces seed entropy to 251 bits. GitHub rates it Low. Fixed in 0.0.6: update to a fixed version.
| Crate | libcrux-ed25519 |
|---|---|
| Type | Vulnerability |
| Affected versions | Before 0.0.6. |
| Fixed in | 0.0.6 |
| Severity | Low (GitHub rating) CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N |
| Published | 2026-02-05 |
| Last changed | 2026-08-24 |
| Also known as | CVE-2026-76234, GHSA-435g-fcv3-8j26, RUSTSEC-2026-0023, RUSTSEC-2026-0024, RUSTSEC-2026-0025 |
| Affected functions | libcrux_ed25519::generate_key_pair |
What to do
- See which version you have:
cargo tree -i libcrux-ed25519(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p libcrux-ed25519. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplelibcrux-ed25519 = "0.0.6") or update the dependency that pulls it in. - Check again with
cargo audit, or paste your Cargo.lock into our Cargo.toml checker.
Details from the advisory
The latest releases of the libcrux-ed25519 crate contains the following bug-fix:
#1320: Remove duplicated clamping step during key generation
The issue fixed in #1320 was first reported by Nadim Kobeissi.
References
- Package: crates.io/crates/libcrux-ed25519
- Advisory: rustsec.org/advisories/RUSTSEC-2026-0026.html
- Web: github.com/cryspen/libcrux/pull/1320
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
Other advisories for libcrux-ed25519
Up next
Same cratelibcrux-ed25519: security historyEvery advisory for this crate, and whether it is safe to use today.Read it next →Did this answer your question?