High 7.5Published May 12, 2024

CVE-2024-34459An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7.

Updated under an hour ago (Oct 26, 2026, 5:23 PM ET)

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It affects xmlsoft xmllint and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for xmlsoft xmllint

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-122
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

xmlsoft xmllint xmlsoft:xmllint	before 2.11.8; from 2.12.0 before 2.12.7	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.0 before V3.1.5	CISA ADP
xmlsoft libxml2 xmlsoft:libxml2	before 2.11.8; from 2.12.0 before 2.12.7	NVD

References

References

https://gitlab.gnome.org/GNOME/libxml2/-/issues/720	exploit, issue-tracking
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.12.7	release-notes
https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.11.8	release-notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/INKSSLW5VMZIXHRPZBAW4TJUX5SQKARG/	vendor-advisory, mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VRDJCNQP32LV56KESUQ5SNZKAJWSZZRI/	vendor-advisory, mailing-list, third-party-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HVUXKYTBWT3G5DEEQX62STJQBY367NL/	vendor-advisory, mailing-list, third-party-advisory
https://lists.debian.org/debian-lts-announce/2025/07/msg00014.html
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/
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.