🛡️ CVE-2024-34459 — libxml2
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.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.
Weakness class
CVE-2024-34459 is classified as CWE-122: Heap-based Buffer Overflow. A write past the end of a heap allocation corrupts allocator metadata or neighbouring objects.
Affected software
CVE-2024-34459 is recorded against 1 package.
- libxml2 (from 2.12.0 up to 2.12.7)
Timeline and source
Published on 14 May 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.
References
gitlab.gnome.org
gitlab.gnome.org
gitlab.gnome.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
gitlab.gnome.org
gitlab.gnome.org
gitlab.gnome.org
lists.debian.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
CVE-2024-34459 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| libxml2 | 2.12.0 | 2.12.7 |
References
Similar Threats
- Unknown ALPINE-CVE-2025-49794
- Unknown ALPINE-CVE-2025-49795
- Unknown ALPINE-CVE-2025-49796
- Unknown ALPINE-CVE-2025-6021
- Unknown ALPINE-CVE-2025-32415
More CVE 2024 advisories
Browse all of CVE 2024 in the advisory index.
Exploit Protection
Are you running libxml2?
CVE-2024-34459 carries CVSS 7.5 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.
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