CVE-2023-44273
CWE-502Published: September 28, 2023· Updated: Jun 17, 2026
Official Description
Consensys gnark-crypto through 0.11.2 allows Signature Malleability. This occurs because deserialisation of EdDSA and ECDSA signatures does not ensure that the data is in a certain interval.
Risk Analysis
Consensys gnark-crypto is affected by signature malleability due to improper deserialization of EdDSA and ECDSA signatures. This critical flaw could allow for cryptographic bypasses, though no active exploitation is currently known.
No public exploit is currently known, but the vulnerability is remotely exploitable with low attack complexity.
Update gnark-crypto to a version that properly validates signature intervals. Ensure cryptographic implementations follow standard security best practices.
Technical Analysis
CVE-2023-44273 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (6)
Quick Facts
Related CVEs (CWE-502)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-44273 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts