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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00847.

Exploitation poc

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Xmlsoft Subscribe
Libxml2 Subscribe
Xmllint Subscribe

Configuration 1 [-]

OR cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*

No data.

No data.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4251-1 libxml2 security update
Debian DSA Debian DSA DSA-5949-1 libxml2 security update
Ubuntu USN Ubuntu USN USN-7240-1 libxml2 vulnerabilities
Ubuntu USN Ubuntu USN USN-7302-1 libxml2 vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gitlab.gnome.org/GNOME/libxml2/-/issues/720 cve-icon cve-icon cve-icon
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.8 cve-icon cve-icon
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.7 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/ cve-icon
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/ cve-icon
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/ cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2024-34459 cve-icon
https://www.cve.org/CVERecord?id=CVE-2024-34459 cve-icon
History

Wed, 05 Nov 2025 07:30:00 +0900

Type Values Removed Values Added
References

Wed, 05 Nov 2025 03:30:00 +0900

Type Values Removed Values Added
References

Tue, 04 Nov 2025 05:30:00 +0900

Type Values Removed Values Added
References

Tue, 04 Nov 2025 05:15:00 +0900

Type Values Removed Values Added
First Time appeared Xmlsoft xmllint
CPEs cpe:2.3:a:xmlsoft:xmllint:*:*:*:*:*:*:*:*
Vendors & Products Xmlsoft xmllint
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sat, 11 Oct 2025 03:15:00 +0900

Type Values Removed Values Added
First Time appeared Xmlsoft
Xmlsoft libxml2
CPEs cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
Vendors & Products Xmlsoft
Xmlsoft libxml2

Fri, 23 Aug 2024 04:00:00 +0900

Type Values Removed Values Added
Weaknesses CWE-122
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-04T22:06:16.644Z

Reserved: 2024-05-04T00:00:00.000Z

Link: CVE-2024-34459

cve-icon Vulnrichment

Updated: 2025-11-04T22:06:16.644Z

cve-icon NVD

Status : Modified

Published: 2024-05-14T15:39:11.917

Modified: 2025-11-04T22:16:01.420

Link: CVE-2024-34459

cve-icon Redhat

Severity : Low

Publid Date: 2024-05-08T00:00:00Z

Links: CVE-2024-34459 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses