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Fencer Intel
medium 5.4

CVE-2021-36654 json

CMSuno 1.7 is vulnerable to an authenticated stored cross site scripting in modifying the filename parameter (tgo) while updating the theme.

published 5y ago modified 4mo ago also EUVD-2021-23250

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 80%
public exploits
1
Exploit-DB

Summary

CMSuno 1.7 is vulnerable to an authenticated stored cross site scripting in modifying the filename parameter (tgo) while updating the theme.

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Timeline

  1. Published
  2. First public exploit (EDB-50179)

Exploit prediction

1.94% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-50179 CMSuno 1.7 - 'tgo' Stored Cross-Site Scripting (XSS) (Authenticated) webapps, 2021-08-05
  • github.com https://github.com/boiteasite/cmsuno/issues/17 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/163737/CMSuno-1.7-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/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

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.