CVE-2026-22699
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
sm2crates.io | >= 0.14.0-pre.0, <= 0.14.0-rc.4 | — |
Affected products
4cpe:2.3:a:rustcrypto:sm2_elliptic_curve:0.14.0:pre0:*:*:*:rust:*:*+ 1 more
- cpe:2.3:a:rustcrypto:sm2_elliptic_curve:0.14.0:pre0:*:*:*:rust:*:*
- cpe:2.3:a:rustcrypto:sm2_elliptic_curve:0.14.0:rc0:*:*:*:rust:*:*
- Range: = 0.14.0-pre.0
Patches
Vulnerability mechanics
References
5- github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcabnvdPatchWEB
- github.com/RustCrypto/elliptic-curves/pull/1602nvdIssue TrackingPatchWEB
- github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-78p6-6878-8mj6ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-22699ghsaADVISORY
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