CVE-2026-110855

GitPython before 3.2.0 Environment Variable Disclosure via .gitmodules Submodule Name

At a glance

Severity: HIGH 7.1
EPSS: EPSS 0.29 % · percentile 21 (2026-10-27)
State: PUBLISHED
Published: 2026-10-14
Updated: 2026-10-15
Assigner: VulnCheck
NVD status: Awaiting Analysis

Description

GitPython before 3.2.0 contains an information disclosure vulnerability that allows malicious repositories to expand environment variables via separate_git_dir in Repo._clone(), which omits expand_vars=False when calling Git.polish_url(). Attackers can craft a .gitmodules submodule name containing variable syntax so that clone plus submodule_update exposes secrets in .git/modules directory names and DEBUG logs.

Scores

Version	Score	Vector	Scored by
CVSS 4.0	HIGH 7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	VulnCheck
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	VulnCheck
CVSS 4.0	HIGH 7.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD · disclosure@vulncheck.com (Secondary)
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N	NVD · disclosure@vulncheck.com (Secondary)

Weaknesses (CWE)

CWE-200

Advisories

GHSA-fx3j-rwgx-fr94 — GitPython: separate_git_dir leaks env vars via crafted .gitmodules submodule name

European references

ENISA EUVD · EUVD-2026-101738
GCVE · GCVE-0-2026-110855

Affected products

Product	Versions
gitpython-developers · GitPython	affected 0 < 3.2.0 ; unaffected 3.2.0

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD