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High 7.0Published Jun 22, 2026
CVE-2026-6653libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling
Updated under an hour ago ()
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It affects GNOME libxml2 and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.
- CVSS
- 7.0 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- Weakness (CWE)
- CWE-416, CWE-611
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- canonical
- NVD analysis
- Analyzed
- Record last updated
- Jun 22, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
GNOME libxml2 gnome:libxml2 (from the name) | from 2.9.11 before 2.11.0 | CNA record |
xmlsoft libxml2 xmlsoft:libxml2 | from 2.9.11 through 2.11.0 | NVD |
References
- https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260issue-tracking, exploit, third-party-advisory
- https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058issue-tracking, exploit, patch
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.