CVE-2026-1055
TalkJS <= 0.1.15 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'welcomeMessage' Parameter
- State
- Published
- Severity
- 4.4 Medium
- Published
- Feb 19, 2026
- Updated
- Apr 14, 2026
- Reserved
- Jan 16, 2026
Description
The TalkJS plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 0.1.15 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.4 Medium | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
TalkJStalkjs |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f91ed211-9703-44fb-a2f8-8d8da910b4c7?source=cve
- https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/SettingsPage.php#L276
- https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/SettingsPage.php#L276
- https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/FieldBuilder.php#L147
- https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/FieldBuilder.php#L147
- https://plugins.trac.wordpress.org/changeset/3465226/
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