How severe is CVE-2026-87819?

CVE-2026-87819 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-87819 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-87819?

CVE-2026-87819 affects Gitpython Project Gitpython. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-87819?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-87819 published?

CVE-2026-87819 was published on 2026-09-09 and last updated on 2026-09-18.

CVE-2026-87819

CVE-2026-87819 is a high-severity vulnerability in Gitpython Project Gitpython with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.7
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1333
Affected product: Gitpython Project Gitpython
Published: 2026-09-09
Last modified: 2026-09-18

Description

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.

Frequently asked questions

What is CVE-2026-87819?: 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.
How severe is CVE-2026-87819?: CVE-2026-87819 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-87819 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-87819?: CVE-2026-87819 affects Gitpython Project Gitpython. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-87819?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2026-87819 published?: CVE-2026-87819 was published on 2026-09-09 and last updated on 2026-09-18.

References

Affected products (1)

cpe:2.3:a:gitpython_project:gitpython:*:*:*:*:*:python:*:*

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