CVE-2026-34165
MediumCVSS 5.0Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
In the go-git library (pure Go git implementation) versions 5.0.0 to before 5.17.1, a maliciously crafted .idx file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory. This issue has been patched in version 5.17.1.
Risk Assessment
An attacker with write access to the repository could cause a service outage by exhausting memory, impacting system availability.
Recommendation
Upgrade the go-git library to version 5.17.1 or later.
Original NVD description (English source)
go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it order to create or alter existing .idx files. This issue has been patched in version 5.17.1.