# CVE-2026-121515: FV Flowplayer Video Player <= 7.5.56.7212 - Unauthenticated Stored Cross-Site Scripting via Comment Content

Status: published. Published: 2026-11-07. Updated: 2026-11-07.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- foliovision / FV Flowplayer Video Player: ≥ 0; ≤ 7.5.56.7212 (affected, semver). Source: CNA: Wordfence

## Severity and prioritization

- CVSS 3.1: 5.4 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N; source: CNA: Wordfence

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/ca0191be-df68-4b5f-85e6-40e962cc5de8?source=cve (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/controller/frontend.php#L707 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/controller/frontend.php#L692 (CNA: Wordfence)

- https://plugins.trac.wordpress.org/browser/fv-wordpress-flowplayer/trunk/controller/frontend.php#L657 (CNA: Wordfence)

- https://github.com/foliovision/fv-wordpress-flowplayer/commit/9f224f71eb16ad01330df46c30b89e8e582cf8c8 (CNA: Wordfence)

## Provenance

- CNA: Wordfence: https://www.cve.org/CVERecord?id=CVE-2026-121515; retrieved 2026-11-07; source updated 2026-11-07

Revision: fb93250f4d48977e676d086cd999f58ee3cb6b06697185b68cf57d9f2f798ec8

Canonical: https://y2.dev/cve/CVE-2026-121515

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- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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