Off-by-one Error Affecting ml-dsa package, versions <0.1.0-rc.5
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-RUST-MLDSA-15182656
- published3 Feb 2026
- disclosed2 Feb 2026
- creditXNX
Introduced: 2 Feb 2026
New CVE NOT AVAILABLE CWE-193 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade ml-dsa to version 0.1.0-rc.5 or higher.
Overview
Affected versions of this package are vulnerable to Off-by-one Error in the use_hint function when handling signature verification. An attacker can cause valid signatures to be incorrectly rejected by crafting inputs where the decomposed low bits r0 equal zero, exploiting the off-by-two error in the calculation.