Medium severity6.5NVD Advisory· Published Sep 9, 2026· Updated Sep 9, 2026

CVE-2026-87818

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.

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Affected products

Gitpython Project/Gitpythonllm-create
Range: <3.1.59

Patches

Vulnerability mechanics

References

github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3xnvd
www.vulncheck.com/advisories/gitpython-3.1.59-local-file-content-oracle-via-no-indexnvd

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cvss	0.423
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000