Read the docs
TI-2026-70159 Aliases CVE-2026-83526GHSA-p776-3xx4-5fcg

Arbitrary file upload in FV Player 8 WordPress plugin

Priority MEDIUM 41CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

The FV Player 8 plugin for WordPress is vulnerable in all versions up to and including 8.1.7. The check_mimetype function writes attacker-supplied remote file content to the public uploads directory before any MIME or extension check, and new player creation lacks a capability check (CWE-434). An authenticated attacker with subscriber access or higher can upload files that may be executable, which may allow remote code execution, but only by winning a race condition and only when the [fvplayer_editor] shortcode is present or the "Enable profile videos" setting is enabled.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The FV Player 8 plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.1.7 via the check_mimetype function. This is due to insufficient file type validation in check_mimetype(), which writes attacker-supplied remote file content to the public uploads directory before any MIME or extension check, combined with a missing capability check on new player creation. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. This requires successfully exploiting a race condition, and is only exploitable if the '[fvplayer_editor]' shortcode is present, or the "Enable profile videos" setting is enabled.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00626 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FolioVisionFV Player 8up to 8.1.7—No fix listedCNA
  • FV Player 8 VendorFolioVision Affected up to 8.1.7 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for FV Player 8.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-10 Threatist record created from CVE-2026-83526
  2. 2026-10-10 Alias added: GHSA-p776-3xx4-5fcg
  3. 2026-10-11 Priority changed: MEDIUM → LOW
  4. 2026-10-11 CISA SSVC decision points changed
  5. 2026-10-11 Priority changed: LOW → MEDIUM
  6. 2026-10-21 EPSS moved to the 50th–90th percentile
  7. 2026-10-25 EPSS moved to the below the 50th percentile
  8. 2026-10-31 EPSS moved to the 50th–90th percentile

References

Other 11

  • TI-2019-10205 A SQL injection vulnerability exists in the FolioVision FV Flowplayer Video Player plugin… CVSS 3.1CRITICAL 9.8
  • TI-2019-11007 The FV Flowplayer Video Player plugin before 7.3.15.727 for WordPress allows email subscription SQL injection. CVSS 3.0CRITICAL 9.8
  • TI-2026-74380 Arbitrary file upload in FV Flowplayer Video Player for WordPress CVSS 3.1HIGH 8.8
  • TI-2024-05882 FV Player <= 7.5.46.7212 - Authenticated (Subscriber+) SQL Injection via exclude Parameter CVSS 3.1HIGH 8.8
  • TI-2023-10538 WordPress FV Flowplayer Video Player Plugin <= 7.5.30.7212 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2026-06644 FV Flowplayer Video Player <= 7.5.49.7212 - Unauthenticated Stored Cross-Site Scripting via Comment Text CVSS 3.1HIGH 7.2
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences