What is CVE-2021-28955?

CVE-2021-28955 is a critical-severity vulnerability in Git-Bug Project, classified under Uncontrolled Search Path Element. CVSS score: 9.8/10. Published 2021-03-22.

How severe is CVE-2021-28955?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Git-Bug Project

CVE-2021-28955

git-bug before 0.7.2 has an Uncontrolled Search Path Element. It will execute git.bat from the current directory in certain PATH situations (most often seen on Windows).

Published 2021-03-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (76.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 76.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Git-Bug Project

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

github.com/MichaelMure/git-bug/security/advisories/GHSA-m898-h4pm-pqfr (Third Party Advisory)
vuln.ryotak.me/advisories/18 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-28955?: CVE-2021-28955 is a critical-severity vulnerability in Git-Bug Project, classified under Uncontrolled Search Path Element. CVSS score: 9.8/10. Published 2021-03-22.
How severe is CVE-2021-28955?: Critical severity. CVSS v3 base score is 9.8 out of 10.