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Fencer Intel
medium 6.5

CVE-2026-87818 json

GitPython 3.1.59 Local File Content Oracle via --no-index

published 2mo ago modified 11d ago also EUVD-2026-74844 , GHSA-rw58-wc66-99g4 , GHSA-whh4-5q6c-9v3x , PYSEC-2026-3983

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi gitpython 3.1.60
  • gitpython-developers GitPython 3.1.60
  • python-git Debian 12 3.1.30-1+deb12u3
  • python-git Debian 13 3.1.44-1+deb13u1
  • python-git Debian 14 3.1.61-1

debian advisories DEBIAN-CVE-2026-87818

  • python-GitPython SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 3.1.34.1693646983.2a2ae77-150400.9.11.1

suse advisories SUSE-SU-2026:4191-1

  • python-GitPython openSUSE Leap 16.0 3.1.44-160000.4.1

opensuse advisories openSUSE-SU-2026:21874-1

Is CVE-2026-87818 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-87818 updated cvss 6.5

GitPython: GitPython: Information disclosure through arbitrary file read

  • Red Hat Ansible Automation Platform 2 python3.12-gitpython, ansible-automation-platform-25/hub-rhel8, ansible-automation-platform-27/hub-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9, rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9 Red Hat Satellite 6 python3.12-gitpython
    affected: no fix available “Fix deferred”
  • Red Hat Exploit Intelligence exploit-intelligence/vulnerability-analysis-rhel9, exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 Red Hat Migration Toolkit for Applications 8 mta/mta-solution-server-rhel9 Red Hat AI Inference Server rhaiis/vllm-cpu-rhel9, rhaiis/vllm-tpu-rhel9 Red Hat Ansible Automation Platform 2 python-gitpython, python3x-gitpython, python3.11-gitpython, automation-controller, ansible-automation-platform-24/hub-rhel8, ansible-automation-platform-26/hub-rhel9, +4 more Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/disk-image-cuda-rhel9
    not affected: vulnerable code not present
  • Red Hat Hardened Images llvm, rust, llvm21, swift-lang
    not affected: component not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-mlflow-rhel9, rhoai/odh-feature-server-rhel9, rhoai/odh-th-torch-cpu-py312-rhel9, rhoai/odh-th-torch-cuda-py312-rhel9, rhoai/odh-th-torch-rocm-py312-rhel9, rhoai/odh-th06-cpu-torch210-py312-rhel9, +21 more Red Hat OpenStack Platform 16.2 python3-GitPython, rhosp-rhel8/openstack-mistral-api, rhosp-rhel8/openstack-mistral-base, rhosp-rhel8/openstack-tripleoclient, rhosp-rhel8/openstack-mistral-engine, rhosp-rhel8/openstack-nova-scheduler, +2 more Red Hat OpenStack Platform 17.1 GitPython, python3-GitPython Red Hat Satellite 6 python-gitpython, satellite/iop-vmaas-rhel9, satellite/iop-vulnerability-engine-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2mo ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-11).

Exploits and checks

  • github.com https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-whh4-5q6c-9v3x referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CNA 4.0 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
pypi gitpython
>=3.1.59, <3.1.60
3.1.60

Affected products

  • gitpython-developers GitPython

Classification

Weakness
  • CWE-88 Improper Neutralization of Argument Delimiters in a Command
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

The maintainers of gitpython-developers/GitPython published their own advisory on GitHub. Reviewed sources take precedence over it.