CVE-2026-126193
Publication date 13 November 2026
Last updated 13 November 2026
Ubuntu priority
Description
Soup Sieve is a CSS selector library for Beautiful Soup. From 0.4 until 3.0, deeply nested CSS pseudo-class selectors can cause recursive parsing to exceed Python’s recursion limit and raise RecursionError . Applications accepting untrusted selectors may experience failure of the affected request or task if the exception is not handled. The demonstrated behavior is recoverable and does not establish an interpreter crash or persistent service-wide denial of service. This vulnerability is fixed in version 3.0.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| soupsieve | 26.10 stonking |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
5.3 · Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-126193
- https://github.com/facelessuser/soupsieve/commit/52de12f157a373614ad0f486d434551c5a4378ee
- https://github.com/facelessuser/soupsieve/pull/306
- https://github.com/facelessuser/soupsieve/releases/tag/3.0
- https://github.com/facelessuser/soupsieve/security/advisories/GHSA-7g44-g9rc-x53w