Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-22700

RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE
Back to all
CVE

CVE-2026-22700

RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE

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 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22700.json, https://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4ab, https://github.com/RustCrypto/elliptic-curves/pull/1603, https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8, https://nvd.nist.gov/vuln/detail/CVE-2026-22700

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00102%
EPSS Percentile
0.27949%
Introduced Version
0
Fix Available
e60e99167a9a2b187ebe80c994c5204b0fdaf4ab

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading