# CVE-2026-86000: python-soupsieve: quadratic complexity when running the `IDENTIFIER` / `VALUE` selector sub-patterns can lead to a DoS

CVE-2026-86000 is fixed in python-soupsieve on 1 platform, first by SUSE-SU-2026:5164-1, released November 7, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-86000
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0061
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 21, 2026

## Description

quadratic complexity when running the `IDENTIFIER` / `VALUE` selector sub-patterns can lead to a DoS

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-soupsieve opensuse-leap 16.0 | 2.6-160000.5.1 | [OPENSUSE-SU-2026:22149-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22149-1.md) | Nov 7, 2026 |
| Linux | python-soupsieve sles 15.7 | 1.9.5-150200.3.6.1 | [SUSE-SU-2026:5164-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-5164-1.md) | Nov 7, 2026 |
| Linux | python-soupsieve sles 16.0 | 2.6-160000.5.1 | [SUSE-SU-2026:24267-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24267-1.md) | Nov 7, 2026 |

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Data as of 2026-11-11T13:47:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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