CVE-2018-8099

Name: CVE-2018-8099
Creator: NVD / NIST
Published: 2018-03-14T00:29:00.657+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.39%

Last modified Jun 17, 2026

CVE-2018-8099 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.39%

68.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-415

Affected Software

Vendor	Product	Versions
Libgit2	Libgit2	< 0.26.2
Debian	Debian Linux	9.0

References

https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fePatch, Third Party Advisory
https://libgit2.github.com/security/Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.htmlMailing List, Third Party Advisory
https://github.com/libgit2/libgit2/commit/58a6fe94cb851f71214dbefac3f9bffee437d6fePatch, Third Party Advisory
https://libgit2.github.com/security/Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00031.htmlMailing List, Third Party Advisory

Timeline

Published: Mar 14, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-8099?

How severe is CVE-2018-8099?

CVE-2018-8099 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2018-8099?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-8099?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST