Vulnerability Details : 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 category: Cross site scripting (XSS)
Products affected by CVE-2021-22849
- cpe:2.3:a:hyweb:hycms-j1:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-22849
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 21 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-22849
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST | |
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST | |
|
4.6
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N |
2.1
|
2.5
|
TWCERT/CC |
CWE ids for CVE-2021-22849
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- nvd@nist.gov (Primary)
- twcert@cert.org.tw (Secondary)
References for CVE-2021-22849
-
https://www.twcert.org.tw/tw/cp-132-4318-09cd3-1.html
TWCERT/CC台灣電腦網路危機處理暨協調中心-Hyweb HyCMS-J1 - Stored XSSThird Party Advisory
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