CVE-2021-22849

5.4 mediumEPSS 0.5%

Medium (5.4) in hyweb hycms-j1. EPSS 0.5% chance of exploitation in the next 30 days.

Hyweb HyCMS-J1 backend editing function does not filter special characters. Users after log-in can inject JavaScript syntax to perform a stored XSS (Stored Cross-site scripting) attack.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-01-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

hyweb:hycms-j1

References

https://www.twcert.org.tw/tw/cp-132-4318-09cd3-1.html
https://www.twcert.org.tw/tw/cp-132-4318-09cd3-1.html

Check your stack JSON