CVE-2026-23967 describes a signature malleability vulnerability in the sm-crypto JavaScript library, affecting versions prior to 0.3.14, specifically impacting its SM2 signature verification logic. This flaw allows an attacker to create a new valid signature for an already signed message using an existing signature. Rated 7.5 HIGH (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N), it is network-exploitable with low complexity, potentially leading to high integrity impact without requiring user interaction. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion with 10 mentions.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.3.14CPE matchmatch criteria | cpe:2.3:a:juneandgreen:sm-crypto:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.