CVE-2026-87819: GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.name_email_rege

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-87819 is a high-severity flaw (CVSS 7.5) affecting gitpython. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.name_email_regex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic backtracking, exhausting CPU resources for over two minutes per commit access.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-1333
Published	2026-09-09
Last modified	2026-09-18

Publisher (CNA): VulnCheck · Vendor: gitpython project

Last updated 2026-09-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-09 12:17 UTCPublished CVE record published
2026-09-18 18:17 UTCUpdated Record last modified

gitpython project gitpython UPGRADE

Affected: < 3.1.60

Fixed in: 3.1.60

Safe to downgrade to: no unaffected older release

1. Check installed version

pip show gitpython

2. UPGRADE to 3.1.60

pip install --upgrade "gitpython>=3.1.60"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-87819?

gitpython: upgrade to 3.1.60. Exact commands for each OS are on this page.

Is CVE-2026-87819 being exploited?

CVE-2026-87819 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-87819 affect?

CVE-2026-87819 affects gitpython. Severity is high (CVSS 7.5). GitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.name_email_regex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing

How urgent is CVE-2026-87819?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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