What is CVE-2026-76233?

CVE-2026-76233 is a medium-severity vulnerability in Renovatebot Renovate, classified under Command Injection. CVSS score: 6.7/10. Published 2026-08-19.

How severe is CVE-2026-76233?

Medium severity. CVSS v3 base score is 6.7 out of 10.

RCE in Renovatebot Renovate

CVE-2026-76233

Renovate versions from 39.53.0 before 40.33.0 contain a command injection vulnerability in the gleam manager where the depName parameter is appended to gleam deps update commands without proper sanitization. Attackers with repository write access can craft malicious gleam.toml files to execute arbitrary commands on the machine running Renovate.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-08-19 · last modified 2026-09-08.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (61.7th percentile), scored 2026-10-05.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.010 · change: +0.003

Affected products

Renovatebot Renovate

Weakness classification (CWE)

CWE-77 — Command Injection

References

github.com/renovatebot/renovate/commit/d29698e0131231652970f02765312769975e4d38 (patch)
github.com/renovatebot/renovate/security/advisories/GHSA-xjr7-3c3g-m763 (vendor-advisory)
www.vulncheck.com/advisories/renovate-before-command-injection-via-gleam-manager (third-party-advisory)

Frequently asked questions

What is CVE-2026-76233?: CVE-2026-76233 is a medium-severity vulnerability in Renovatebot Renovate, classified under Command Injection. CVSS score: 6.7/10. Published 2026-08-19.
How severe is CVE-2026-76233?: Medium severity. CVSS v3 base score is 6.7 out of 10.