CVE-2026-78678: Argument Injection (CVSS 6.5)

Description

GitPython versions before 3.1.59 contain an incomplete denylist in the unsafe_git_revision_options guard that omits --contents and -S options, allowing attackers to read arbitrary files by passing these options to Repo.blame(). Attackers can supply revision values like --contents=/etc/passwd to leak file contents through the blame result returned to the caller.

Is your site exposed to CVE-2026-78678?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.15%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-88 CWE-88

References

Other References

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-5xxx-qhh7-9287 https://www.vulncheck.com/advisories/gitpython-before-arbitrary-file-read-via-repo-blame https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-5xxx-qhh7-9287

Frequently Asked Questions

What is CVE-2026-78678? +

GitPython versions before 3.1.59 contain an incomplete denylist in the unsafe_git_revision_options guard that omits --contents and -S options, allowing attackers to read arbitrary files by passing these options to Repo.blame(). Attackers can supply revision values like --contents=/etc/passwd to leak file contents through the blame result returned to the caller. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-78678? +

CVE-2026-78678 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-78678? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-84256

An argument parsing issue in OpenVPN 2.1_rc10 through 2.6.22 and 2.7_alpha1 through 2.7.6 on Windows allows remote authenticated users to …

CVE-2026-8044

CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability exists that could cause remote code execution by …

CVE-2026-53694

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') vulnerability in Nomachine allows Argument Injection.This issue affects Nomachine: before …

CVE-2026-54088

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior …

CVE-2026-55887

MCP Gateway allows easy and secure running and deployment of MCP servers. From 0.21.0 until 0.42.2, Docker MCP Gateway YAML-unmarshalled …

CVE-2025-48385

Git is a fast, scalable, distributed revision control system with an unusually rich command set that provides both high-level operations …

CVE-2026-78678