PatchTheCVECVE-2026-15748: The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and in
CVE-2026-15748 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configu
Why this priority
- Critical severity
- EPSS top 7%: very likely to be exploited
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 6.1% (top 7%) |
| CISA exploited list | No |
| Weakness | CWE-434 |
| Published | 2026-08-18 |
| Last modified | 2026-10-22 |
Last updated 2026-10-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: yora1928/cve-2026-15748 (3 stars)
- GitHub PoC: ubaydev/CVE-2026-15748 (0 stars)
- GitHub PoC: 0x4cr/CVE-2026-15748 (0 stars)
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-15748?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-15748 being exploited?
CVE-2026-15748 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-15748 affect?
CVE-2026-15748 affects affected software. Severity is critical (CVSS 9.8). The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where
How urgent is CVE-2026-15748?
Priority 66/100. Critical severity; EPSS top 7%: very likely to be exploited; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action