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Fencer Intel
medium 6.1

CVE-2019-20389 json

Subrion CMS XSS

published 6y ago modified 4mo ago also GHSA-xvgx-668j-f67p , EUVD-2022-5861

cvss
6.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

An XSS issue was identified on the Subrion CMS 4.2.1 /panel/configuration/general settings page. A remote attacker can inject arbitrary JavaScript code in the v[language_switch] parameter (within multipart/form-data), which is reflected back within a user's browser without proper output encoding.

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Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • packetstormsecurity.com http://packetstormsecurity.com/files/157699/Subrion-CMS-4.2.1-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

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
GitHub 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist intelliants/subrion
<=4.2.1
 no fix listed

Classification

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

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.