CVE-2026-22699

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcab	Patch
https://github.com/RustCrypto/elliptic-curves/pull/1602	Issue Tracking Patch
https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6	Exploit Vendor Advisory
https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	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::*

History

No history.

Information

Published : 2026-01-10 06:15

Updated : 2026-01-22 14:53

NVD link : CVE-2026-22699

Mitre link : CVE-2026-22699

CVE.ORG link : CVE-2026-22699

JSON object : View

Products Affected

rustcrypto

sm2_elliptic_curve

CWE

CWE-20

Improper Input Validation

NVD-CWE-noinfo

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