CVE-2021-3028

git-big-picture Code Execution

9.8 CriticalFix available

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

2.92%Up 1.5 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: CVE-2021-3028
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: CVE-2021-3028
Updated: 2026-11-02

EUVDEUVD-2021-0093 No score

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: EUVD-2021-0093
Updated: 2026-11-03

GitHub AdvisoriesGHSA-x38j-4rr5-hqrj 9.3

git-big-picture Code Execution

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: GHSA-x38j-4rr5-hqrj
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSV 9.8

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: CVE-2021-3028
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2021-3028 9.8

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: DEBIAN-CVE-2021-3028
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-x38j-4rr5-hqrj 9.3

git-big-picture Code Execution

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: GHSA-x38j-4rr5-hqrj
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSVUBUNTU-CVE-2021-3028 9.8

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: UBUNTU-CVE-2021-3028
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVPYSEC-2021-15 No score

git-big-picture before 1.0.0 mishandles ' characters in a branch name, leading to code execution.

Record: PYSEC-2021-15
Updated: 2026-11-02

Affected products

git-big-picture project git-big-picture

Affected packages

Affected packages
Package	Affected	Fixed
`git-big-picture` PyPI	before 1.0.0	1.0.0
`git-big-picture` Debian:12	before 1.0.0-1	1.0.0-1
`git-big-picture` Debian:13	before 1.0.0-1	1.0.0-1
`git-big-picture` Debian:14	before 1.0.0-1	1.0.0-1
`git-big-picture` PyPI	before 1.0.0, plus listed versions 0.10.00.10.1	1.0.0
`git-big-picture` Ubuntu:16.04:LTS	All versions, plus listed versions 0.9.0+git20131031-10.9.0+git20131031-2	None known
`git-big-picture` Ubuntu:18.04:LTS	All versions, plus listed versions 0.9.0+git20131031-2	None known
`git-big-picture` Ubuntu:22.04:LTS	All versions, plus listed versions 1.0.0-11.1.1-1	None known
`git-big-picture` Ubuntu:24.04:LTS	All versions, plus listed versions 1.2.2-1	None known
`git-big-picture` Ubuntu:25.10	All versions, plus listed versions 1.3.0-1	None known
`git-big-picture` Ubuntu:26.10	All versions, plus listed versions 1.3.0-2	None known
`git-big-picture` Ubuntu:26.04:LTS	All versions, plus listed versions 1.3.0-11.3.0-2	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-3028 is a critical vulnerability (CVSS 9.8) in Git-big-picture Project Git-big-picture, published January 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.92%, the 87th percentile. Fixed in git-big-picture 1.0.0.

References

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