Regular Expression Denial of Service Vulnerability in GitPython from GitPython Developers
CVE-2026-87819

8.7HIGH

Key Information:

Vendor

Gitpython-developers

Status
Gitpython
Vendor
CVE Published:
9 September 2026

What is CVE-2026-87819?

GitPython versions prior to 3.1.60 contain a vulnerability that allows attackers to create a denial of service condition through specially crafted commit objects. By manipulating the author field to include an unterminated angle bracket, an attacker can exploit the Actor.name_email_regex function, leading to significant CPU resource exhaustion due to quadratic backtracking during processing. This vulnerability can severely impact system performance, causing delays and potential downtime.

Affected Version(s)

GitPython 0 < 3.1.60

GitPython 3.1.60

References

https://github.com/gitpython-developers/GitPython/securit...
vendor-advisory
https://www.vulncheck.com/advisories/gitpython-before-3.1...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

prvazsahnazarov
manus-use
.