Vulnerability Details : CVE-2020-25812
An issue was discovered in MediaWiki 1.34.x before 1.34.4. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2020-25812
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25812
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25812
| 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-2020-25812
-
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-2020-25812
-
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048488.html
[MediaWiki-l] Maintenance release: 1.31.10 / 1.34.4Mailing List;Vendor Advisory
-
https://lists.wikimedia.org/pipermail/mediawiki-l/2020-September/048480.html
[MediaWiki-l] Security and maintenance release: 1.31.9 / 1.34.3Mailing List;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RTTPZ7XMDS66I442OLLHXBDNP2LCBJU6/
[SECURITY] Fedora 33 Update: php-oojs-oojs-ui-0.39.3-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://gerrit.wikimedia.org/g/mediawiki/core/+/ad4a3ba45fb955aa8c0eb3c83809b16b40a498b9/includes/specials/SpecialContributions.php#592
includes/specials/SpecialContributions.php - mediawiki/core - GitilesVendor Advisory
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