CVE-2023-3550CWE-79

Stored XSS leads to privilege escalation in MediaWiki v1.40.0

High · published September 25, 2023

CVSS v3.1
7.3
EPSS
1%
Percentile
71.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.01380 · 71.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2023-09-25T15:20Z
EPSS history
Timeline
  • 25 SEP 15:20Z
    Stored XSS leads to privilege escalation in MediaWiki v1.40.0
    cvelistv5