CVE-2026-14558 json
WP User Frontend < 4.3.10 - Editor+ PHP Object Injection via AI Form Builder
published 2026-08-28 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-67567
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
The User Frontend WordPress plugin before 4.3.10 does not properly validate field type definitions and deserialises user-controlled post metadata when rendering submitted posts, allowing users with Editor-level access and above to inject arbitrary PHP objects, which can lead to remote code execution when a suitable POP chain is present on the site.
Patch / fix
- Unknown User Frontend 4.3.10
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/217303f4-4363-46f6-8aee-8e0c1aedc271/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Unknown User Frontend
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
- Technology feeds
References
-
wpscan.com
/vulnerability/217303f4-4363-46f6-8aee-8e0c1aedc271/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-14558
- NVD CVE-2026-14558
Fencer Vulns 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.