Cross Site Scripting (XSS) vulnerability exists in Eyoucms v1.4.7 and earlier via the addonfieldext parameter.

published 2021-08-18 5y ago modified 2026-06-17 4mo ago also EUVD-2020-20632

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

Is CVE-2020-28146 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

exploit-db.com https://www.exploit-db.com/exploits/48530 referenced PoC, tagged "exploit" by a source, unverified
github.com https://github.com/eyoucms/eyoucms/issues/12 referenced PoC, tagged "exploit" by a source, unverified
eyoucms.com https://www.eyoucms.com/ask/list_1_0/4511.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

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

exploit-db.com /exploits/48530
exploit, third-party-advisory, vdb-entry
github.com /eyoucms/eyoucms/issues/12
exploit, issue-tracking, third-party-advisory
eyoucms.com /ask/list_1_0/4511.html
exploit, vendor-advisory

Sources

CVE List CVE-2020-28146
NVD CVE-2020-28146

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.