CVE-2026-72522
Published: August 12, 2026Last modified: August 20, 2026
Description
libexpat before 2.8.3 has an out-of-bounds read and resultant infinite loop because low surrogates are treated the same as high surrogates during Unicode processing in the *_toUtf16 functions.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.2 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | expat | Fixed (2.8.3-r0) |
| 25 LTS | expat | Fixed (2.8.3-r0) | |
| Stream | expat | Fixed (2.8.3-r0) | |
| Hardened Containers | 23 LTS | expat | Fixed (2.8.3-r0) |
| 25 LTS | expat | Fixed (2.8.3-r0) | |
| Stream | expat | Fixed (2.8.3-r0) |