CVE-2020-35622 json
An issue was discovered in the GlobalUsage extension for MediaWiki through 1.35.1.
published 2020-12-21 5 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2020-35622 , EUVD-2020-23288
- cvss
- 6.1
- 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 52%
- public exploits
- 0
- none known
Summary
An issue was discovered in the GlobalUsage extension for MediaWiki through 1.35.1. SpecialGlobalUsage.php calls WikiMap::makeForeignLink unsafely. The $page variable within the formatItem function was not being properly escaped, allowing for XSS under certain conditions.
Patch / fix
- bitnami mediawiki 1.35.2
Exploit prediction
0.67% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).
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 |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/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 | <1.35.2 |
1.35.2 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
gerrit.wikimedia.org
/r/c/mediawiki/extensions/GlobalUsage/+/646744
issue-tracking, patch, third-party-advisory, web
-
phabricator.wikimedia.org
/T268341
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2020-35622
web
Sources
- CVE List CVE-2020-35622
- NVD CVE-2020-35622
- OSV BIT-mediawiki-2020-35622
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.