CVE-2026-1055
Stored XSS in TalkJS WordPress Plugin Affects Multi-Site Admins
Publication date: 2026-02-19
Last updated on: 2026-04-08
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| talkjs | talkjs_plugin | to 0.1.15 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The TalkJS plugin for WordPress has a Stored Cross-Site Scripting (XSS) vulnerability in all versions up to and including 0.1.15. This vulnerability arises because the plugin does not properly sanitize input or escape output in the admin settings. As a result, authenticated users with administrator-level permissions or higher can inject malicious web scripts into pages. These scripts execute whenever any user accesses the affected pages.
This vulnerability specifically affects multi-site WordPress installations or installations where the unfiltered_html setting is disabled.
How can this vulnerability impact me? :
This vulnerability allows attackers with administrator-level access to inject malicious scripts that execute in the context of users visiting the affected pages. This can lead to unauthorized actions such as stealing user credentials, hijacking user sessions, or performing actions on behalf of users without their consent.
Because the vulnerability requires high privileges (administrator-level) and affects multi-site or restricted HTML installations, the risk is somewhat limited to environments with these configurations.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, ensure that you update the TalkJS plugin for WordPress to a version later than 0.1.15 where the issue is fixed.
Additionally, review your WordPress installation settings: this vulnerability only affects multi-site installations and those where unfiltered_html has been disabled.
Limit administrator-level permissions to trusted users only, as exploitation requires authenticated users with such permissions.