Improper Verification of Cryptographic Signature Affecting github.com/emmansun/gmsm/sm9 package, versions <0.41.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMEMMANSUNGMSMSM9-15682543
- published18 Mar 2026
- disclosed13 Mar 2026
- creditsunyxedu, Yang Yang
Introduced: 13 Mar 2026
CVE-2026-32614 Â (opens in a new tab)How to fix?
Upgrade github.com/emmansun/gmsm/sm9 to version 0.41.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the UnwrapKey logic of the SM9 decryption implementation. An attacker can cause unauthorized message decryption and integrity bypass by crafting a ciphertext with the elliptic-curve point set to the group identity element, allowing the forged ciphertext to pass integrity checks and be accepted as valid by the recipient.