CVE-2026-121519
Social Slider Feed <= 2.3.8 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'slidespeed' Parameter
Description
The Social Slider Feed – Social Media Feed & Gallery Widgets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'slidespeed' parameter in all versions up to, and including, 2.3.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The missing current_user_can() check in the Factory framework's connect() dispatcher allows Subscriber-level users to bypass the manage_options capability gate and both harvest a valid wis_edit_feed nonce and overwrite any feed's slidespeed setting, after which the stored payload fires on every public pageview embedding the feed shortcode.
INFO
Published Date :
Nov. 7, 2026, 2:29 a.m.
Last Modified :
Nov. 7, 2026, 2:29 a.m.
Remotely Exploit :
Yes !
Source :
Wordfence
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update the Social Slider Feed plugin immediately.
- Apply vendor patches when available.
- Sanitize all user inputs.
- Escape output data properly.
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CVE-2026-121519 vulnerability anywhere in the article.