How severe is CVE-2021-28955?

CVE-2021-28955 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-28955 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28955?

CVE-2021-28955 affects Git-bug Project Git-bug. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28955?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-28955 published?

CVE-2021-28955 was published on 2021-03-22 and last updated on 2026-06-17.

CVE-2021-28955

CVE-2021-28955 is a critical-severity vulnerability in Git-bug Project Git-bug with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-427.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Git-bug Project Git-bug
Published: 2021-03-22
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is 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).
How severe is CVE-2021-28955?: CVE-2021-28955 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-28955 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28955?: CVE-2021-28955 affects Git-bug Project Git-bug. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28955?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-28955 published?: CVE-2021-28955 was published on 2021-03-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:git-bug_project:git-bug:*:*:*:*:*:*:*:*

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