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Fencer Vulns
medium 5.2

CVE-2023-43340 json

Evolution CMS Cross-site Scripting vulnerability

published 2023-10-19 3 y ago modified 2026-09-10 1 mo ago also GHSA-432f-967f-vxg4 , EUVD-2023-2634

cvss
5.2
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

Cross-site scripting (XSS) vulnerability in evolution v.3.2.3 allows a local attacker to execute arbitrary code via a crafted payload injected into the cmsadmin, cmsadminemail, cmspassword and cmspasswordconfim parameters

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/sromanhu/Evolution-Reflected-XSS---Installation-Admin-Options referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/sromanhu/-CVE-2023-43340-Evolution-Reflected-XSS---Installation-Admin-Options referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.2 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
GitHub 3.1 5.2 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist evolutioncms/evolution
<=3.2.3
 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.