CVE-2021-36127 json
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36.
published 2021-07-02 5 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2021-36127 , EUVD-2021-22759
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. The Special:GlobalUserRights page provided search results which, for a suppressed MediaWiki user, were different than for any other user, thus easily disclosing suppressed accounts (which are supposed to be completely hidden).
Patch / fix
- bitnami mediawiki 1.36.1
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- phabricator.wikimedia.org https://phabricator.wikimedia.org/T285190 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | mediawiki | <1.36.1 |
1.36.1 |
Classification
- Weakness
-
- CWE-922 Insecure Storage of Sensitive Information
References
-
phabricator.wikimedia.org
/T285190
exploit, issue-tracking, patch, vendor-advisory, web
-
gerrit.wikimedia.org
/r/q/I4e4dbcad61e1d4f6fd8b038bf63d19c69081a8ec
patch, vendor-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2021-36127
web
Sources
- CVE List CVE-2021-36127
- NVD CVE-2021-36127
- OSV BIT-mediawiki-2021-36127
Fencer Vulns 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.