Vulnerability · Published Jan 22, 2021 · Assigned by twcert

CVE-2021-22849Hyweb HyCMS-J1 - Stored XSS

Medium 4.6

In plain English

A medium-severity cross-site scripting in HyCMS-J1 from Hyweb. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)4.6Medium

Exploit odds (30 days)0.5%top 55.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Hyweb	HyCMS-J1	unspecified – through 7.4.3

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

References

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