CVE-2023-3550
HIGH7.3EPSS 0.18%mediawiki - security update
Published: 9/25/2023Modified: 3/9/2026
Also known as:DSA-5520-1DEBIAN-CVE-2023-3550DEBIAN-CVE-2023-45360DEBIAN-CVE-2023-45362DEBIAN-CVE-2023-45363
Description
Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.
Affected packages (4)
- Bitnami/mediawiki>= 1.40.0, < 1.40.1
- Debian/mediawikifrom 0, < 1:1.35.13-1~deb11u1
- Debian/mediawikifrom 0, < 1:1.31.16-1+deb10u7
- Debian/mediawikifrom 0, < 1:1.35.13-1~deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
References (7)
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2023-3550
- WEBhttps://fluidattacks.com/advisories/blondie/
- WEBhttps://lists.debian.org/debian-lts-announce/2023/11/msg00027.html
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/FU2FGUXXK6TMV6R52VRECLC6XCSQQISY/
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2023-3550
- WEBhttps://www.debian.org/security/2023/dsa-5520
- WEBhttps://www.mediawiki.org/wiki/MediaWiki/