CVE-2017-18437 json
cPanel before 64.0.21 allows a Webmail account to execute code via forwarders (SEC-240).
published 2019-08-02 7 y ago modified 2026-06-17 4 mo ago also EUVD-2017-9553
- cvss
- 4.4
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
cPanel before 64.0.21 allows a Webmail account to execute code via forwarders (SEC-240).
Patch / fix
- cpanel cpanel 56.0.49, 58.0.49, 60.0.43, 62.0.24, 64.0.21
Exploit prediction
0.46% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 4.4 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVD | 2.0 | 3.6 | AV:L/AC:L/Au:N/C:P/I:P/A:N |
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
documentation.cpanel.net
/display/CL/64+Change+Log
release-notes, vendor-advisory
-
news.cpanel.com
/cpanel-tsr-2017-0003-full-disclosure/
vendor-advisory
Sources
- CVE List CVE-2017-18437
- NVD CVE-2017-18437
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.