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Fencer Vulns
medium 4.8

CVE-2018-20418 json

Craft CMS Cross-site Scripting (XSS) Vulnerability

published 2018-12-24 7 y ago modified 2026-06-17 4 mo ago also GHSA-72pf-cvwq-vgqg , EUVD-2022-2894

cvss
4.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
1
Exploit-DB

Summary

index.php?p=admin/actions/entries/save-entry in Craft CMS 3.0.25 allows XSS by saving a new title from the console tab.

Timeline

  1. Published
  2. First public exploit (EDB-46054)

Exploit prediction

3.70% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-46054 Craft CMS 3.0.25 - Cross-Site Scripting webapps, 2018-12-27
  • github.com https://github.com/rdincel1/Craft-CMS-3.0.25---Cross-Site-Scripting referenced PoC, tagged "exploit" by a source, unverified
  • raifberkaydincel.com https://www.raifberkaydincel.com/craft-cms-3-0-25-cross-site-scripting-vulnerability.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 4.8 CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
GitHub 3.0 4.8 CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist craftcms/cms
<=3.0.25
 no fix listed

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.