Custom Permalinks <= 2.6.0 - Authenticated(Editor+) Stored Cross-Site Scripting
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
The Custom Permalinks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.0 due to insufficient input sanitization and output escaping on tag names. This allows authenticated users, with editor-level permissions or greater to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, even when 'unfiltered_html' has been disabled.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| sasiddiqui | Custom Permalinks | up to 2.6.0 | — | No fix listed | CNA |
- Custom Permalinks Vendorsasiddiqui Affected up to 2.6.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:samiahmedsiddiqui:custom_permalinks:*:*:*:*:*:wordpress:*:* | before 2.7.0 | Vulnerable | Sami Ahmed Siddiqui |
- cpe:2.3:a:samiahmedsiddiqui:custom_permalinks:*:*:*:*:*:wordpress:*:* Versions before 2.7.0 Vulnerable ·Sami Ahmed Siddiqui
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-0926
- 2026-10-03 Alias added: GHSA-qhg4-f6mr-54g9
References
Patch 3
- https://github.com/samiahmedsiddiqui/custom-permalinks/pull/96
- https://plugins.trac.wordpress.org/changeset/3138206/custom-permalinks/trunk/admin/class-custom-permalinks-post-types-table.php
- https://plugins.trac.wordpress.org/changeset/3138206/custom-permalinks/trunk/admin/class-custom-permalinks-taxonomies-table.php
Sources
- CVE-2023-0926 · CVE Program
- CVE-2023-0926 · NVD
- FIRST EPSS
- GHSA-qhg4-f6mr-54g9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences