Vulnerability Details : CVE-2021-42041
Potential exploit
An issue was discovered in CentralAuth in MediaWiki through 1.36.2. The rightsnone MediaWiki message was not being properly sanitized and allowed for the injection and execution of HTML and JavaScript via the setchange log.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-42041
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-42041
0.85%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 73 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42041
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2021-42041
-
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)
References for CVE-2021-42041
-
https://gerrit.wikimedia.org/r/q/I7aeaa6e4de5ccaa5eeb6bf4fb00c96b01d5fea35
I7aeaa6e4de5ccaa5eeb6bf4fb00c96b01d5fea35 · Gerrit Code ReviewPatch;Vendor Advisory
-
https://phabricator.wikimedia.org/T291696
⚓ T291696 XSS vulnerability in the 'setchange' logExploit;Patch;Vendor Advisory
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