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Vulnerabilities

Vulnerability · CVE-2026-110856

GitPython before 3.2.0 ReDoS via _re_actor_epoch in parse_actor_and_date

Published Oct 14, 2026 · catalog updated Oct 15, 2026 · GitPython

Check if you run it

No confirmed exploitation is on record for CVE-2026-110856. EPSS is 0.28%. Act only if a listed version of GitPython is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.28%
Remediation
Advisory link
Affected products
Debian:12 python-git · Debian:13 python-git · Debian:14 python-git · vendor gitpython-developers GitPython

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 python-git3.1.30-1, 3.1.30-1+deb12u2, 3.1.36-1
  • Debian:13 python-git3.1.44-1, 3.1.45-1, 3.1.46-1
  • Debian:14 python-git3.1.44-1, 3.1.45-1, 3.1.46-1
  • vendor gitpython-developers GitPythonversion unspecified

How to fix CVE-2026-110856

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-110856. EPSS is 0.28%. Act only if a listed version of GitPython is installed.

Which versions are affected?

Compare what you have installed with 3.1.30-1, 3.1.30-1+deb12u2, 3.1.36-1, 3.1.44-1, 3.1.45-1, 3.1.46-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1333: Inefficient Regular Expression Complexity. EPSS 0.28%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · NIST NVD

    Detected

    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.

  2. Oct 15, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-110856

    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

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-110856

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-110856

    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

    nvd.nist.gov
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-110856
    osv.dev

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.