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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required High

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00023.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
talkjs TalkJS unaffected
Version Status Constraints
* affected ≤ 0.1.15

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/FieldBuilder.php#L147 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/talkjs/tags/0.1.15/classes/admin/ui/SettingsPage.php#L276 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/FieldBuilder.php#L147 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/talkjs/trunk/classes/admin/ui/SettingsPage.php#L276 cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/f91ed211-9703-44fb-a2f8-8d8da910b4c7?source=cve cve-icon cve-icon
History

Thu, 19 Feb 2026 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Talkjs
Talkjs talkjs
Wordpress
Wordpress wordpress
Vendors & Products Talkjs
Talkjs talkjs
Wordpress
Wordpress wordpress

Thu, 19 Feb 2026 05:00:00 +0000

Type Values Removed Values Added
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.
Title TalkJS <= 0.1.15 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'welcomeMessage' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-02-19T04:36:28.335Z

Reserved: 2026-01-16T17:11:29.252Z

Link: CVE-2026-1055

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-19T07:17:43.543

Modified: 2026-02-19T15:53:02.850

Link: CVE-2026-1055

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-19T10:06:46Z

Weaknesses