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rustsec-2026-0023
Vulnerability from osv_rustsec
Published
2026-01-26 12:00
Modified
2026-08-24 08:08
Summary
X25519 secret validation did not check buffer length or clamping
Details

The latest releases of the libcrux-ecdh crate contains the following bug-fix:

#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

Severity
0.0 (None)
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
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": "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",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "libcrux_ecdh::validate_scalar"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "libcrux-ecdh",
        "purl": "pkg:cargo/libcrux-ecdh"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.0.6"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2026-76234",
    "GHSA-435g-fcv3-8j26"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The latest releases of the libcrux-ecdh crate contains the following\nbug-fix:\n\n[#1301](https://github.com/cryspen/libcrux/pull/1301): Check length\nand clamping in X25519 secret validation. This is a breaking change\nsince errors are now raised on unclamped X25519 secrets or inputs of\nthe wrong length",
  "id": "RUSTSEC-2026-0023",
  "modified": "2026-08-24T08:08:07Z",
  "published": "2026-01-26T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/libcrux-ecdh"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0023.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cryspen/libcrux/pull/1301"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "X25519 secret validation did not check buffer length or clamping"
}



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