Read the docs
TI-2026-74546 Aliases CVE-2026-110856

Regular expression denial of service in GitPython author parsing

Priority HIGH 77CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 7 fixed, 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-1333.

Summary

GitPython before 3.2.0 contains an inefficient regular expression in the _re_actor_epoch pattern used by parse_actor_and_date on author, committer, and tagger lines. An attacker who serves a repository with commit or tag objects containing long space-filled lines causes quadratic backtracking, which exhausts CPU (CWE-1333).

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

GitPython before 3.2.0 contains a regular expression denial of service vulnerability in the _re_actor_epoch pattern used by parse_actor_and_date on author, committer, and tagger lines. Attackers can serve repositories with commit or tag objects containing long space-filled lines lacking a valid epoch or timezone, causing quadratic backtracking and CPU exhaustion.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00337 27th percentileScored 2026-11-07
Fix Partial GitPython (gitpython-developers): 3.2.0Red Hat: 6 advisoriesRed Hat: 7 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
gitpython-developersGitPythonbefore 3.2.03.2.0Patch availableCNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:gitpython_project:gitpython:*:*:*:*:*:*:*:*——gitpython-developers

Remediation

Upgrade GitPython to version 3.2.0 or later. Red Hat fixes it in Red Hat Satellite 6.16 for RHEL 8 and 9 (RHSA-2026:95655), Satellite 6.17 for RHEL 9 (RHSA-2026:95656), Satellite 6.18 for RHEL 9 (RHSA-2026:95657), Satellite 6.19 (RHSA-2026:92861) and Red Hat OpenShift AI 3.4 (RHSA-2026:92510). Red Hat lists Exploit Intelligence, Red Hat Ansible Automation Platform 2, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenShift AI (RHOAI) and Red Hat Satellite 6 as affected, with no fix and no plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA GitPython (gitpython-developers) Fixed in 3.2.0

Red Hat 6 advisories

  • RHSA-2026:95655 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.16 EUS security update
    • Red Hat Satellite 6.16 for RHEL 8 openvox-agent-8.32.0-1.el8sat, openvox-server-8.18.0-1.el8sat, python-brotli-1.2.1-1.el8pc +11
    • Red Hat Satellite 6.16 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat, python-brotli-1.2.1-1.el9pc +11
  • RHSA-2026:95657 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.18 security update
    • Red Hat Satellite 6.18 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat, python3.12-brotli-1.2.1-1.el9pc +4
  • RHSA-2026:95656 Released 2026-11-05 · Red Hat rating Critical
    Satellite 6.17 security update
    • Red Hat Satellite 6.17 for RHEL 9 openvox-agent-8.32.0-1.el9sat, openvox-server-8.18.0-1.el9sat, python-brotli-1.2.1-1.el9pc +9
Show 3 more Red Hat advisories
  • RHSA-2026:92861 Released 2026-10-29 · Red Hat rating Critical
    Satellite 6.19 security update
    • Red Hat Satellite 6.19 for RHEL 9 openvox-agent-8.31.1-1.el9sat, openvox-server-8.17.0-1.el9sat, python3.12-brotli-1.2.1-1.el9pc +6
  • RHSA-2026:92574 Released 2026-10-29 · Red Hat rating Important
    Technical preview of the satellite/iop-vmaas-rhel9 container image
    • Red Hat Satellite 6.19 registry.redhat.io/satellite/iop-vmaas-rhel9
  • RHSA-2026:92510 Released 2026-10-29 · Red Hat rating Critical
    RHOAI 3.4.6 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-cli-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9 +47

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    gitpython-developers GitPython 3.2.0

    6 records Highest priority Priority HIGH 2 HIGH, 3 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-74549 Argument injection in GitPython Head.checkout() leaks arbitrary filesPriority HIGH 77
    • TI-2026-74550 Symlink following in GitPython Submodule.move() escapes worktreePriority MEDIUM 64
    • TI-2026-74545 GitPython expands environment variables in submodule namesPriority MEDIUM 64
    Show all 6 records →

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Exploit IntelligenceAffectedNo fix yet
Red Hat Ansible Automation Platform 2AffectedNo fix yet
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet
Red Hat Satellite 6AffectedNo fix yet
Red Hat OpenShift AI 3.4Fixed RHSA-2026:92510
Red Hat Satellite 6.16 for RHEL 8Fixed RHSA-2026:95655
Red Hat Satellite 6.16 for RHEL 9Fixed RHSA-2026:95655
Red Hat Satellite 6.17 for RHEL 9Fixed RHSA-2026:95656
Red Hat Satellite 6.18 for RHEL 9Fixed RHSA-2026:95657
Red Hat Satellite 6.19Fixed RHSA-2026:92574
Red Hat Satellite 6.19 for RHEL 9Fixed RHSA-2026:92861
Not affected: 12 products
  • Red Hat AI Inference Server
  • Red Hat Ansible Automation Platform 2
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenStack Platform 13 (Queens)
  • Red Hat OpenStack Platform 16.2
  • Red Hat OpenStack Platform 17.1
  • Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Satellite 6.19 for RHEL 9

Timeline

  1. 2026-10-15 Threatist record created from CVE-2026-110856
  2. 2026-10-16 Priority changed: MEDIUM → LOW
  3. 2026-10-16 Affected versions changed · Red Hat
  4. 2026-10-16 CVSS score added · Red Hat
  5. 2026-10-20 CISA SSVC decision points changed
  6. 2026-10-20 Priority changed: LOW → HIGH
  7. 2026-10-21 Affected versions changed · Red Hat
  8. 2026-10-30 Fix available: RHSA-2026:92510 · Red Hat
  9. 2026-10-30 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
  10. 2026-10-30 Fix available: Red Hat Satellite 6.19, Red Hat Satellite 6.19 for RHEL 9 · Red Hat
  11. 2026-10-31 Fix available: RHSA-2026:92574 · Red Hat
  12. 2026-10-31 Fix available: RHSA-2026:92861 · Red Hat
  13. 2026-11-06 Fix available: Red Hat Satellite 6.16 for RHEL 8, Red Hat Satellite 6.16 for RHEL 9, Red Hat Satellite 6.17 for RHEL 9 +1 · Red Hat
  14. 2026-11-06 Fix available: RHSA-2026:95656 · Red Hat
  15. 2026-11-06 Fix available: RHSA-2026:95655 · Red Hat
  16. 2026-11-06 Fix available: RHSA-2026:95657 · Red Hat

References

Advisory 1

  • TI-2026-74549 Argument injection in GitPython Head.checkout() leaks arbitrary files CVSS 4.0HIGH 8.7
  • TI-2026-54689 GitPython before 3.1.59 Path Traversal via separate-git-dir CVSS 4.0HIGH 8.7
  • TI-2026-51706 GitPython before 3.1.55 Environment Variable Exfiltration via Remote.add() CVSS 4.0HIGH 8.7
  • TI-2026-47618 GitPython before 3.1.52 Environment Variable Exfiltration via clone_from CVSS 4.0HIGH 8.7
  • TI-2026-30595 GitPython: Unsafe option check validates multi_options before shlex.split transforms it CVSS 3.1CRITICAL 9.8
  • TI-2026-32220 GitPython: Path traversal in GitPython reference APIs allows arbitrary file write and delete outside the repository CVSS 4.0HIGH 7.8
See all 43 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences