CVE-2022-4120 in the critical feed json
Stop Spammers Security < 2022.6 - Unauthenticated PHP Object Injection
published 2022-12-26 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-51487
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 18.1%
- EPSS 18.1% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
The Stop Spammers Security | Block Spam Users, Comments, Forms WordPress plugin before 2022.6 passes base64 encoded user input to the unserialize() PHP function when CAPTCHA are used as second challenge, which could lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain
Patch / fix
- Unknown Stop Spammers Security | Block Spam Users, Comments, Forms 2022.6
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
18.12% 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/e8bb79db-ef77-43be-b449-4c4b5310eedf referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Unknown Stop Spammers Security | Block Spam Users, Comments, Forms
Classification
- Technology feeds
References
-
wpscan.com
/vulnerability/e8bb79db-ef77-43be-b449-4c4b5310eedf
exploit, vdb-entry, technical-description, third-party-advisory
Sources
- CVE List CVE-2022-4120
- NVD CVE-2022-4120
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.