CVE-2026-87818: Gitpython Project Gitpython

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Gitpython Project Gitpython: before 3.1.60 (fixed in 3.1.60)

Published 2026-09-09. Last modified 2026-09-16.