Vulnerability Description
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 PKE decryption path where an invalid elliptic-curve point (C1) is decoded and the resulting value is unwrapped without checking. Specifically, AffinePoint::from_encoded_point(&encoded_c1) may return a None/CtOption::None when the supplied coordinates are syntactically valid but do not lie on the SM2 curve. The calling code previously used .unwrap(), causing a panic when presented with such input. This issue has been patched via commit 085b7be.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Rustcrypto | Sm2 Elliptic Curve | 0.14.0 |
Related Weaknesses (CWE)
References
- https://github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203Patch
- https://github.com/RustCrypto/elliptic-curves/pull/1602Issue TrackingPatch
- https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878ExploitVendor Advisory
- https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878ExploitVendor Advisory
FAQ
What is CVE-2026-22699?
CVE-2026-22699 is a vulnerability with a CVSS score of 7.5 (HIGH). RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret k...
How severe is CVE-2026-22699?
CVE-2026-22699 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22699?
Check the references section above for vendor advisories and patch information. Affected products include: Rustcrypto Sm2 Elliptic Curve.