CVE-2023-3550
mediawiki - security update
7.3
HIGH
CVSS 3.1
EPSS 0.18%
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.
How to fix CVE-2023-3550
To remediate CVE-2023-3550, upgrade the affected package to a fixed version below.
- —upgrade to 1.40.1 or later
- —upgrade to 1:1.35.13-1~deb11u1 or later
- —upgrade to 1:1.31.16-1+deb10u7 or later
- —upgrade to 1:1.35.13-1~deb11u1 or later
Is CVE-2023-3550 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- >= 1.40.0, < 1.40.1
- from 0, < 1:1.35.13-1~deb11u1
- from 0, < 1:1.31.16-1+deb10u7
- from 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 |