Elliptic's verify function omits uniqueness validation
The Elliptic package 6.5.5 for Node.js for EDDSA implementation does not perform the required check if the signature proof(s) is within the bounds of the order n of the base point of the elliptic curve, leading to signature malleability. Namely, the verify function in lib/elliptic/eddsa/index.js omits sig.S().gte(sig.eddsa.curve.n) || sig.S().isNeg() validation.
This vulnerability could have a security-relevant impact if an application relies on the uniqueness of a signature.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | elliptic | < 6.5.6 | 6.5.6 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-48949
- https://github.com/indutny/elliptic/commit/7ac5360118f74eb02da73bdf9f24fd0c72ff5281
- https://blog.trailofbits.com/2025/11/18/we-found-cryptography-bugs-in-the-elliptic-library-using-wycheproof
- https://github.com/indutny/elliptic
- https://github.com/indutny/elliptic/compare/v6.5.5...v6.5.6
- https://security.netapp.com/advisory/ntap-20241227-0003
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-347- Platform
- npm
- Package
elliptic- Disclosed
- 10.10.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-434g-2637-qmqr - CC BY 4.0
Vulnerability history: elliptic
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 9
- First → latest
- 07.2020 01.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 1
- Medium 1
- Low 6
Disclosures per year
- 2020: 1
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 5
- 2025: 1
- 2026: 1
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