CVE-2026-121515 json
FV Flowplayer Video Player <= 7.5.56.7212 - Unauthenticated Stored Cross-Site Scripting via Comment Content
published 3d ago modified 2d ago also EUVD-2026-118567
- cvss
- 5.4
- 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 12%
- public exploits
- 0
- none known
Summary
The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 7.5.56.7212 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 'Parse Vimeo and YouTube links' option to be enabled, and the injected comment must be approved before the script executes for site visitors.
Patch / fix
Is CVE-2026-121515 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2d ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- foliovision FV Flowplayer Video Player
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- github.com /foliovision/fv-wordpress-flowplayer/commit/9f224f71eb16ad01330df46c30b89e8e582cf8c8
- wordfence.com /threat-intel/vulnerabilities/id/ca0191be-df68-4b5f-85e6-40e962cc5de8?source=cve
- plugins.trac.wordpress.org /browser/fv-wordpress-flowplayer/trunk/controller/frontend.php#L707
- plugins.trac.wordpress.org /browser/fv-wordpress-flowplayer/trunk/controller/frontend.php#L692
- plugins.trac.wordpress.org /browser/fv-wordpress-flowplayer/trunk/controller/frontend.php#L657
Sources
- CVE List CVE-2026-121515
- NVD CVE-2026-121515
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.