What is CVE-2026-24910?

CVE-2026-24910 is a medium-severity vulnerability in Bun, classified under CWE-348. CVSS score: 5.9/10. Published 2026-01-27.

How severe is CVE-2026-24910?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Bun

CVE-2026-24910

In Bun before 1.3.5, the default trusted dependencies list (aka trust allow list) can be spoofed by a non-npm package in the case of a matching name (for file, link, git, or github).

EPSS: 0.000 (0.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N.

Affected products

Bun — versions 0

Weakness classification (CWE)

CWE-348

References

www.scworld.com/news/six-javascript-zero-day-bugs-lead-to-fears-of-supply-chain…
bun.com/blog/bun-v1.3.5
www.koi.ai/blog/packagegate-6-zero-days-in-js-package-managers-but-npm-wont-act

Frequently asked questions

What is CVE-2026-24910?: CVE-2026-24910 is a medium-severity vulnerability in Bun, classified under CWE-348. CVSS score: 5.9/10. Published 2026-01-27.
How severe is CVE-2026-24910?: Medium severity. CVSS v3 base score is 5.9 out of 10.