CVE catalog
CVE-2026-58031
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resou
- Severity
- Medium · CVSS 4.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.27% · Oct 25, 2026
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Special.Apisandbox/ApiSandboxLayout.Js. This issue affects MediaWiki: from 1.46.0-rc.0 before 1.46.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | mediawiki | sid | 1:1.43.11+dfsg-3 | not affected |
| Debian | mediawiki | forky | 1:1.43.11+dfsg-1 | not affected |
| Debian | mediawiki | trixie | 1:1.43.9+dfsg-1~deb13u1 | not affected |
| Debian | mediawiki | trixie-security | 1:1.43.9+dfsg-1~deb13u1 | not affected |
| Debian | mediawiki | bookworm | 1:1.39.17-1+deb12u2 | not affected |
| Debian | mediawiki | bookworm-security | 1:1.39.17-1+deb12u2 | not affected |
| Cpe | mediawiki | Not reported | Not reported | unknown |
| Cpe | mediawiki | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | mediawiki | source | sid | Not affected | unimportant | Not reported | Not reported |
| Debian | mediawiki | source | forky | Not affected | unimportant | Not reported | Not reported |
| Debian | mediawiki | source | trixie | Not affected | unimportant | Not reported | Not reported |
| Debian | mediawiki | source | bookworm | Not affected | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [mediawiki]Not affected
Details (4)
1:1.39.17-1+deb12u2· all · bookwormNot affected
nvd · mediawiki · debian · bookworm
1:1.39.17-1+deb12u2· all · bookwormNot affected
nvd · mediawiki · debian · bookworm
1:1.39.17-1+deb12u2· all · bookworm-securityNot affected
nvd · mediawiki · debian · bookworm
1:1.39.17-1+deb12u2· all · bookworm-securityNot affected
nvd · mediawiki · debian · bookworm
- [mediawiki-classes]Not affected
Source package: [mediawiki]
Details (4)
1:1.39.17-1+deb12u2· all · bookwormNot affected
nvd · mediawiki · debian · bookworm
1:1.39.17-1+deb12u2· all · bookwormNot affected
nvd · mediawiki · debian · bookworm
1:1.39.17-1+deb12u2· all · bookworm-securityNot affected
nvd · mediawiki · debian · bookworm
1:1.39.17-1+deb12u2· all · bookworm-securityNot affected
nvd · mediawiki · debian · bookworm
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-58031]
- [https://phabricator.wikimedia.org/T426889]
- [https://security-tracker.debian.org/tracker/CVE-2026-58031]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58031.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2170.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]