What is CVE-2021-22849?

CVE-2021-22849 is a medium-severity vulnerability in Hyweb Hycms-J1, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2021-01-22.

How severe is CVE-2021-22849?

Medium severity. CVSS v3 base score is 4.6 out of 10.

XSS in Hyweb Hycms-J1

CVE-2021-22849

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (40.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Hyweb Hycms-j1 — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

twcert@cert.org.tw (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-22849?: CVE-2021-22849 is a medium-severity vulnerability in Hyweb Hycms-J1, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2021-01-22.
How severe is CVE-2021-22849?: Medium severity. CVSS v3 base score is 4.6 out of 10.