Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-87818

CVE-2026-87818HIGH

gitpython-developers GitPython — GitPython 3.1.59 Local File Content Oracle via --no-index

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   N   H   N   N    7.1   .0041   33.2     —

AFFECTED
  Product    Versions  Fixed
  GitPython  3.1.59 –  3.1.60

TIMELINE
  Sep 9   Reserved by VulnCheck
  Sep 9   Published (CNA: VulnCheck)
  Sep 16  EXPLOIT PUBLISHED — CVE-2026-87818 (gitpython-developers GitPython). Public exploit reference added.

CWE-88 · CNA: VulnCheck · CVSS v4.0 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 9, 2026	Reserved	Reserved by VulnCheck
September 9, 2026	Published	Published (CNA: VulnCheck)
September 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-87818 (gitpython-developers GitPython). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
gitpython-developers	GitPython	—	3.1.59	3.1.60

Weaknesses

CWE-88

References (2)

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3x [Exploit, Vendor Advisory]
https://www.vulncheck.com/advisories/gitpython-3.1.59-local-file-content-oracle-via-no-index [Third Party Advisory]

Authoritative record: CVE-2026-87818 at cve.org

Vendors: gitpython-developers

Weaknesses: CWE-88

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-87818 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.