CVE-2026-96649 json
Frontend Post Submission Manager Lite <= 1.3.4 - Unauthenticated Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink)
published last mo. modified last mo. also EUVD-2026-89577
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink) in all versions up to, and including, 1.3.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the site operator to have enabled guest post submission via the [fpsm] shortcode, which registers a publicly accessible AJAX handler gated only by a nonce emitted on every page containing the shortcode.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wpshuffle Frontend Post Submission Manager Lite – Guest Post and Frontend Submission Forms
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/0af8ff06-68e2-4a0c-9de4-d06a6a2e86c9?source=cve
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-fileuploader.js#L583
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-fileuploader.js#L578
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.4/assets/js/fpsml-frontend.js#L40
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/cores/ajax-process-form.php#L5
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/cores/ajax-process-form.php#L161
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.4/includes/classes/class-fpsml-library.php#L112
- plugins.trac.wordpress.org /browser/frontend-post-submission-manager-lite/tags/1.3.5/
Sources
- CVE List CVE-2026-96649
- NVD CVE-2026-96649
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.