PYSEC-2026-3983

vendorUSosv

view advisory published 2026-09-09Licence: CC-BY-4.0

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-87818US	medium6.5	0.41% (35th)	—	2026-09-09
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 com…

references

External citations — patches, advisories, analysis.

https://github.com/advisories/GHSA-rw58-wc66-99g4ADVISORY
https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3xEVIDENCE
https://www.vulncheck.com/advisories/gitpython-3.1.59-local-file-content-oracle-via-no-indexADVISORY

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