CVE-2018-18921 json
CSRF in PHP Server Monitor before 3.3.2
published 2018-12-18 7 y ago modified 2026-06-17 4 mo ago also GHSA-w2g4-g8xr-px4x , EUVD-2022-5462
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
PHP Server Monitor before 3.3.2 has CSRF, as demonstrated by a Delete action.
Patch / fix
- packagist phpservermon/phpservermon 3.3.2
- phpservermonitor php_server_monitor 3.3.2
Exploit prediction
0.61% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- medium.com https://medium.com/bugbountywriteup/cve-2018-18921-php-server-monitor-3-3-1-cross-site-request-forgery-a73e8dae563 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.8 | AV:N/AC:M/Au:N/C:N/I:P/A:P |
| GitHub | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | phpservermon/phpservermon | <3.3.2 |
3.3.2 |
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/phpservermon/phpservermon/issues/670
patch, third-party-advisory
-
github.com
/phpservermon/phpservermon/commit/30150714a8af0c82259b733f604fce54c0dcbf40
web
-
medium.com
/bugbountywriteup/cve-2018-18921-php-server-monitor-3-3-1-cross-site-request-forgery-a73e8dae563
web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2018-18921
advisory
-
github.com
/phpservermon/phpservermon/issues/670#issuecomment-440873239
web
Sources
- CVE List CVE-2018-18921
- GitHub Advisory GHSA-w2g4-g8xr-px4x
- NVD CVE-2018-18921
Fencer Intel 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.