CVE-2026-6653
Published: June 24, 2026Last modified: July 15, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.8 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libxml2 | Fixed (2.10.4-r10) |
| 25 LTS | libxml2 | Not affected (2.13.8-r0) | |
| Stream | libxml2 | Fixed (2.11.4-r0) | |
| Hardened Containers | 23 LTS | libxml2 | Fixed (2.10.4-r10) |
| 25 LTS | libxml2 | Not affected (2.13.8-r0) | |
| Stream | libxml2 | Fixed (2.11.4-r0) |