CVE-2023-2877 in the critical feed json
Formidable Forms < 6.3.1 - Subscriber+ Remote Code Execution
published 2023-06-27 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34325
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 22.5%
- EPSS 22.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.
Patch / fix
- Unknown Formidable Forms 6.3.1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 23 mo ago
Exploit prediction
22.45% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/33765da5-c56e-42c1-83dd-fcaad976b402 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Unknown Formidable Forms
Classification
- Technology feeds
References
-
wpscan.com
/vulnerability/33765da5-c56e-42c1-83dd-fcaad976b402
exploit, vdb-entry, technical-description, third-party-advisory
Sources
- CVE List CVE-2023-2877
- NVD CVE-2023-2877
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.