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Fencer Intel
high 8.8

CVE-2016-10816 json

cPanel before 57.9999.54 allows Webmail accounts to execute arbitrary code through forwarders (SEC-121).

published 2019-08-01 7 y ago modified 2026-06-17 4 mo ago also EUVD-2016-1810

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

cPanel before 57.9999.54 allows Webmail accounts to execute arbitrary code through forwarders (SEC-121).

Patch / fix

  • cpanel cpanel 11.50.6.2, 11.52.6.1, 11.54.0.24, 56.0.15

Exploit prediction

1.71% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

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.