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Fencer Intel
medium 5.4

CVE-2020-28930 json

A Cross-Site Scripting (XSS) issue in the 'update user' and 'delete user' functionalities in settings/users.php in EPSON EPS TSE Server 8 (…

published 5y ago modified 4mo ago also EUVD-2020-21318

cvss
5.4
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 50%
public exploits
0
none known

Summary

A Cross-Site Scripting (XSS) issue in the 'update user' and 'delete user' functionalities in settings/users.php in EPSON EPS TSE Server 8 (21.0.11) allows an authenticated attacker to inject a JavaScript payload in the user management page that is executed by an administrator.

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Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • blog.bssi.fr https://blog.bssi.fr/multiple-vulnerabilities-within-epson-eps-tse-server-8/#vulnerability-2 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.