CVE-2026-87818

EUVD-2026-74844
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.
Argument Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 34.39%
Affected Products (NVD)
VendorProductVersion
gitpython_projectgitpython
𝑥
< 3.1.60
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
python-git
bookworm
vulnerable
forky
3.1.62-3
fixed
sid
3.2.1-1
fixed
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
python-git
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
trusty
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3x
https://www.vulncheck.com/advisories/gitpython-3.1.59-local-file-content-oracle-via-no-index