CVE-2023-37302 json
MediaWiki Cross-site Scripting vulnerability
published 2023-06-30 3 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2023-37302 , EUVD-2023-1786 , GHSA-fmrf-p77g-vv5c
- 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 53%
- public exploits
- 0
- none known
Summary
An issue was discovered in SiteLinksView.php in Wikibase in MediaWiki through 1.39.3. There is XSS via a crafted badge title attribute. This is also related to lack of escaping in wbTemplate (from resources/wikibase/templates.js) for quotes (which can be in a title attribute).
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 mo ago
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- phabricator.wikimedia.org https://phabricator.wikimedia.org/T339111 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| 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 |
|---|---|---|---|
| packagist | wikibase/wikibase | <=1.39.3 |
no fix listed |
| bitnami | mediawiki | <1.39.4 |
1.39.4 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
phabricator.wikimedia.org
/T339111
web, exploit, issue-tracking, patch, vendor-advisory
-
gerrit.wikimedia.org
/r/c/mediawiki/extensions/Wikibase/+/933649
web, release-notes, vendor-advisory
-
gerrit.wikimedia.org
/r/c/mediawiki/extensions/Wikibase/+/933650
web, release-notes, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2023-37302
advisory, web
-
github.com
/wikimedia/mediawiki
package
Sources
- CVE List CVE-2023-37302
- GitHub Advisory GHSA-fmrf-p77g-vv5c
- NVD CVE-2023-37302
- OSV BIT-mediawiki-2023-37302
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.