CVE-2026-1263 json
Webling <= 3.9.0 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'title' Parameter
published 2026-04-10 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-21248
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
The Webling plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.9.0 due to insufficient input sanitization, insufficient output escaping, and missing capabilities checks in the 'webling_admin_save_form' and 'webling_admin_save_memberlist' functions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject Webling forms and memberlists with arbitrary web scripts that will execute whenever an administrator views the related form or memberlist area of the WordPress admin.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- usystemsgmbh Webling
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/bd8fbe0d-0709-4fa2-9294-393ddcd05b22?source=cve
- plugins.trac.wordpress.org /browser/webling/tags/3.9.0/src/admin/lists/Form_List.php#L122
- plugins.trac.wordpress.org /browser/webling/tags/3.9.0/src/admin/lists/Memberlist_List.php#L115
- plugins.trac.wordpress.org /browser/webling/tags/3.9.0/src/admin/actions/save_form.php#L2
- plugins.trac.wordpress.org /browser/webling/tags/3.9.0/src/admin/actions/save_memberlist.php#L2
- plugins.trac.wordpress.org /changeset?old_path=%2Fwebling/tags/3.9.0&new_path=%2Fwebling/tags/3.9.1
Sources
- CVE List CVE-2026-1263
- NVD CVE-2026-1263
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.