CVE-2026-87818

Medium

Description

GitPython 3.1.59 fails to restrict the --no-index option in the high-level diff API, allowing attackers to read arbitrary filesystem paths as repository operands. Attackers can combine --no-index with -I/--ignore-matching-lines to create a content-dependent Boolean oracle, repeatedly querying local files to recover single-line secrets through distinguishable success or error responses.

SeverityMedium

CVSS6.5

Exploit probability—

ProductGitpython

PublishedSep 9, 2026

First seenSep 9, 2026

Weakness typeCWE-88CWE-88

How to fix

Update

gitpython_project gitpython3.1.60 or later
gitpython3.1.60 or later

Vendor advisories

github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3x

Affected products

Product	Affected versions	Fixed in
gitpython_project gitpython	v < 3.1.60	3.1.60
gitpythonPyPI	3.1.59 ≤ v, 3.1.59 ≤ v < 3.1.60	3.1.60

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