Bug-Fixes in `libcrux-ecdh`, `libcrux-ed25519`, `libcrux-psq`
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- Information disclosure
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-327.
Summary
In accordance with our [security policy for `libcrux`](https://github.com/cryspen/libcrux/blob/main/SECURITY.md), we publish a GitHub security advisory for any releases whose CHANGELOG includes bug-fixes, and encourage our users to upgrade. The latest releases of the `libcrux-ecdh`, `libcrux-ed25519` and `libcrux-psq` crates contain the following bug-fixes: ## `libcrux-ecdh` - [#1301](https://github.com/cryspen/libcrux/pull/1301): Check length and clamping in X25519 secret validation. This is a breaking change since errors are now raised on unclamped X25519 secrets or inputs of the wrong length ## `libcrux-ed25519` - [#1320](https://github.com/cryspen/libcrux/pull/1320): Remove duplicated clamping step during key generation The issue fixed in #1320 was first reported by Nadim Kobeissi. ## `libcrux-psq` - [#1319](https://github.com/cryspen/libcrux/pull/1319): Propagate AEADError instead of panicking - [#1301](https://github.com/cryspen/libcrux/pull/1301): Fix broken clamping check for imported X25519 secret keys The issue fixed in #1319 was first reported by Nadim Kobeissi.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libcrux-ecdh (crates.io) | before 0.0.6 | 0.0.6 | Patch available | GHSA-435g-fcv3-8j26 |
| — | libcrux-ed25519 (crates.io) | before 0.0.6 | 0.0.6 | Patch available | GHSA-435g-fcv3-8j26 |
| — | libcrux-psq (crates.io) | before 0.0.7 | 0.0.7 | Patch available | GHSA-435g-fcv3-8j26 |
- libcrux-ecdh (crates.io) Vendor— Affected before 0.0.6 Fixed in 0.0.6 Patch available GHSA-435g-fcv3-8j26
- libcrux-ed25519 (crates.io) Vendor— Affected before 0.0.6 Fixed in 0.0.6 Patch available GHSA-435g-fcv3-8j26
- libcrux-psq (crates.io) Vendor— Affected before 0.0.7 Fixed in 0.0.7 Patch available GHSA-435g-fcv3-8j26
Remediation
- Fix · GHSA-435g-fcv3-8j26 libcrux-ecdh (crates.io) Fixed in 0.0.6 Advisory →
- Fix · GHSA-435g-fcv3-8j26 libcrux-ed25519 (crates.io) Fixed in 0.0.6 Advisory →
- Fix · GHSA-435g-fcv3-8j26 libcrux-psq (crates.io) Fixed in 0.0.7 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-435g-fcv3-8j26
References
Other 12
- https://github.com/cryspen/libcrux/security/advisories/GHSA-435g-fcv3-8j26
- https://github.com/cryspen/libcrux/pull/1301
- https://github.com/cryspen/libcrux/pull/1319
- https://github.com/cryspen/libcrux/pull/1320
- https://github.com/cryspen/libcrux/commit/4d6f5d3c2542b6179a6474dec8cfb8b8ddf31a84
- https://github.com/cryspen/libcrux/commit/a09022c5811ca7fd1c6d9a239ff294d64ee86734
- https://github.com/cryspen/libcrux/commit/f303b6446c19fe9a7c993f61e426023609cd5fac
- https://github.com/cryspen/libcrux
- https://rustsec.org/advisories/RUSTSEC-2026-0023.html
- https://rustsec.org/advisories/RUSTSEC-2026-0024.html
- https://rustsec.org/advisories/RUSTSEC-2026-0025.html
- https://rustsec.org/advisories/RUSTSEC-2026-0026.html
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences