CVE-2024-34459

Name: CVE-2024-34459
Creator: NVD / NIST
Published: 2024-05-14T15:39:11.917+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.30%

Last modified Jun 17, 2026

CVE-2024-34459 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.. EPSS estimates a 2.30% chance of exploitation in the next 30 days.

Description

An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

2.30%

81.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions
Xmlsoft	Libxml2	< 2.11.8
Xmlsoft	Libxml2	>= 2.12.0, < 2.12.7

References

https://gitlab.gnome.org/GNOME/libxml2/-/issues/720Exploit, Issue Tracking
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.8Release Notes
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.7Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/Mailing List, Third Party Advisory
https://gitlab.gnome.org/GNOME/libxml2/-/issues/720Exploit, Issue Tracking
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.8Release Notes
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.7Release Notes
https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/

Timeline

Published: May 14, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-34459?

How severe is CVE-2024-34459?

CVE-2024-34459 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.30% probability of exploitation in the next 30 days.

How do I fix CVE-2024-34459?

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-2024-34459?

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

Scan your code now

Source: NVD / NIST