CVE-2026-7210
Published: May 21, 2026Last modified: May 28, 2026
Description
`xml.parsers.expat` and `xml.etree.ElementTree` use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch.
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 | python3 | Fixed (3.11.15-r2) |
| 25 LTS | python3 | Fixed (3.12.13-r2) | |
| Stream | python3 | Fixed (3.14.3-r2) | |
| Hardened Containers | 23 LTS | python3 | Fixed (3.11.15-r2) |
| 25 LTS | python3 | Fixed (3.12.13-r2) | |
| Stream | python3 | Fixed (3.14.3-r2) |