Improper Verification of Cryptographic Signature Affecting ml-dsa package, versions <0.1.0-rc.4
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUST-MLDSA-15138211
- published29 Jan 2026
- disclosed28 Jan 2026
- creditorenyomtov
Introduced: 28 Jan 2026
CVE-2026-24850 (opens in a new tab)How to fix?
Upgrade ml-dsa to version 0.1.0-rc.4 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the monotonic functionin the hint.rs file. An attacker can cause signature malleability by submitting signatures with repeated hint indices, which are incorrectly accepted due to a non-strict monotonicity check. This can result in multiple distinct byte sequences being accepted as valid for the same message and key pair, potentially undermining systems that rely on signature uniqueness, such as those implementing transaction deduplication or replay protection.