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Fencer Vulns
medium 6.1

CVE-2020-29137 json

cPanel before 90.0.17 allows self-XSS via the WHM Transfer Tool interface (SEC-577).

published 2020-11-27 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-21518

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
0
none known

Summary

cPanel before 90.0.17 allows self-XSS via the WHM Transfer Tool interface (SEC-577).

Patch / fix

  • cpanel cpanel 90.0.17

Exploit prediction

0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

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.