CVE-2021-36131 json
An XSS issue was discovered in the SportsTeams extension in MediaWiki through 1.36.
published 2021-07-02 5 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2021-36131 , EUVD-2021-22763
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
An XSS issue was discovered in the SportsTeams extension in MediaWiki through 1.36. Within several special pages, a privileged user could inject arbitrary HTML and JavaScript within various data fields. The attack could easily propagate across many pages for many users.
Patch / fix
- bitnami mediawiki 1.36.1
Exploit prediction
0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| OSV | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mediawiki | <1.36.1 |
1.36.1 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
phabricator.wikimedia.org
/T281196
issue-tracking, patch, vendor-advisory, web
-
gerrit.wikimedia.org
/r/q/Ic312cc9b8463c8e7c3298a661abfcff2cc2332cb
patch, vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-36131
web
Sources
- CVE List CVE-2021-36131
- NVD CVE-2021-36131
- OSV BIT-mediawiki-2021-36131
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