Medium severity · published Sep 9, 2026
CVE-2026-87818
GitPython 3.1.59 Local File Content Oracle via --no-index
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitPython · gitpython-developers
3.1.59 before 3.1.60 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-87818
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-87818
vendor-advisory
https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3x
third-party-advisory
https://www.vulncheck.com/advisories/gitpython-3.1.59-local-file-content-oracle-via-no-index
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