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Vulnerability record · CVE-2018-8099 · published 14 March 2018

CVE-2018-8099: Libgit2 double free vulnerability

Libgit2 · Libgit2

Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file.

6.5 CVSS 3.1 Medium EPSS 1.4% · top 28.9% CWE-415 · Double free
6.5CVSS 3.1 base score, v2 4.3
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Incorrect returning of an error code in the index.c:read_entry() function leads to a double free in libgit2 before v0.26.2, which allows an attacker to cause a denial of service via a crafted repository index file.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe PatchThird Party Advisory
https://libgit2.github.com/security/ PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html Mailing ListThird Party Advisory
https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fe PatchThird Party Advisory
https://libgit2.github.com/security/ PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.html Mailing ListThird Party Advisory

Track CVE-2018-8099 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

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Source: NIST National Vulnerability Database (record CVE-2018-8099), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.