CVE-2026-6653
libxml2: Use after free in xmlParseInternalSubset via improper entity resolution handling
Description
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.
INFO
Published Date :
June 22, 2026, 12:40 p.m.
Last Modified :
June 22, 2026, 12:40 p.m.
Remotely Exploit :
Yes !
Source :
canonical
Affected Products
The following products are affected by CVE-2026-6653
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | cc1ad9ee-3454-478d-9317-d3e869d708bc |
Solution
- Update libxml2 to a patched version.
- Ensure proper XML entity resolution handling.
- Validate all XML inputs.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-6653 vulnerability anywhere in the article.