Vulnerability · Published Apr 24, 2026 · Assigned by GitHub_M

CVE-2026-41907uuid: Missing buffer bounds check in `v3`/`v5`/`v6` when `buf` is provided

High 8.1

In plain English

A high-severity out-of-bounds write in uuid from uuidjs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.1High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

uuid is for the creation of RFC9562 (formerly RFC4122) UUIDs. Prior to 14.0.0, v3, v5, and v6 accept external output buffers but do not reject out-of-range writes (small buf or large offset). This allows silent partial writes into caller-provided buffers. This vulnerability is fixed in 14.0.0.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	node-uuid	no fix listed	DEBIAN-CVE-2026-41907
Debian:13	node-uuid	no fix listed	DEBIAN-CVE-2026-41907
Debian:14	node-uuid	14.0.0+~11.0.0-1	DEBIAN-CVE-2026-41907
Ubuntu:22.04:LTS	node-uuid	no fix listed	UBUNTU-CVE-2026-41907
Ubuntu:24.04:LTS	node-uuid	no fix listed	UBUNTU-CVE-2026-41907
Ubuntu:25.10	node-uuid	no fix listed	UBUNTU-CVE-2026-41907
Ubuntu:26.04:LTS	node-uuid	no fix listed	UBUNTU-CVE-2026-41907
Ubuntu:26.10	node-uuid	no fix listed	UBUNTU-CVE-2026-41907
npm	uuid	13.0.1	GHSA-w5hq-g745-h8pq
npm	uuid	12.0.1	GHSA-w5hq-g745-h8pq
npm	uuid	11.1.1	GHSA-w5hq-g745-h8pq

Affected products (as reported)

Vendor	Product	Versions
uuidjs	uuid	< 14.0.0

Weakness: CWE-823, CWE-787 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

References

https://github.com/uuidjs/uuid/security/advisories/GHSA-w5hq-g745-h8pq x_refsource_CONFIRM