CVE-2019-12471 json
MediaWiki Cross-site Scripting (XSS)
published 2019-07-10 7 y ago modified 2026-06-17 4 mo ago also GHSA-2rm7-xxx8-35jh , EUVD-2022-2043
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 70%
- public exploits
- 0
- none known
Summary
Wikimedia MediaWiki 1.30.0 through 1.32.1 has XSS. Loading user JavaScript from a non-existent account allows anyone to create the account, and perform XSS on users loading that script. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.
Patch / fix
- packagist mediawiki/core 1.27.6, 1.30.2, 1.31.2
- mediawiki mediawiki 1.30.2, 1.31.2, 1.32.2
- mediawiki Debian 14, Debian 13, Debian 12 1:1.31.2-1
debian advisories DEBIAN-CVE-2019-12471
Exploit prediction
1.29% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/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 |
| GitHub | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | mediawiki/core | >=1.27.0, <1.27.6 >=1.30.0, <1.30.2 >=1.31.0, <1.31.2 |
1.27.6 1.30.2 1.31.2 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
lists.wikimedia.org
/pipermail/wikitech-l/2019-June/092152.html
web, patch, third-party-advisory
-
debian.org
/security/2019/dsa-4460
vendor-advisory, web, third-party-advisory
-
seclists.org
/bugtraq/2019/Jun/12
mailing-list, web, third-party-advisory
-
phabricator.wikimedia.org
/T207603
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-12471
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/mediawiki/core/CVE-2019-12471.yaml
web
-
github.com
/wikimedia/mediawiki
package
Sources
- CVE List CVE-2019-12471
- GitHub Advisory GHSA-2rm7-xxx8-35jh
- NVD CVE-2019-12471
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.