CVE-2026-1055
TalkJS <= 0.1.15 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'welcomeMessage' Parameter
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
11th
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.
| CWE | CWE-79 |
| Vendor | talkjs |
| Product | talkjs |
| Published | Feb 19, 2026 |
| Last Updated | Apr 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
talkjs / TalkJS
0 ≤ 0.1.15
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/f91ed211-9703-44fb-a2f8-8d8da910b4c7?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/SettingsPage.php#L276 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/SettingsPage.php#L276 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/FieldBuilder.php#L147 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/FieldBuilder.php#L147 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3465226/
Credits
Bhumividh Treloges