CVE-2026-76956
Published: August 22, 2026Last modified: August 31, 2026
Description
In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.9 |
| Attack Vector | NETWORK |
| Attack complexity | HIGH |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:H/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-r1) |
| 25 LTS | expat | Fixed (2.8.3-r1) | |
| Stream | expat | Fixed (2.8.3-r2) | |
| Hardened Containers | 23 LTS | expat | Unknown (2.5.0-r0) |
| 25 LTS | expat | Unknown (2.7.1-r0) | |
| Stream | expat | Unknown (2.4.9-r0) |