CVE-2021-42046 json
An issue was discovered in the GlobalWatchlist extension in MediaWiki through 1.36.2.
published 5y ago modified 4mo ago also BIT-mediawiki-2021-42046 , EUVD-2021-29034
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 58%
- public exploits
- 0
- none known
Summary
An issue was discovered in the GlobalWatchlist extension in MediaWiki through 1.36.2. The rev-deleted-user and ntimes messages were not properly escaped and allowed for users to inject HTML and JavaScript.
Patch / fix
- bitnami mediawiki 1.36.3
Is CVE-2021-42046 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.86% chance of exploitation in the next 30 days, higher than 58% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| OSV | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mediawiki | <1.36.3 |
1.36.3 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
gerrit.wikimedia.org
/r/q/Ib7f9b009730fe0df283cec1169f84c7a83a58b1d
patch, vendor-advisory, web
-
gerrit.wikimedia.org
/r/q/Id2204fb5afe591d63764466de35ac0aaa5999983
patch, vendor-advisory, web
-
phabricator.wikimedia.org
/T286385
vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-42046
web
Sources
- CVE List CVE-2021-42046
- NVD CVE-2021-42046
- OSV BIT-mediawiki-2021-42046
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.