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vulnrichmentFluid AttacksVULNRICHMENT:CVE-2023-3550
HistorySep 25, 2023 - 3:20 p.m.

CVE-2023-3550 Stored XSS leads to privilege escalation in MediaWiki v1.40.0

2023-09-2515:20:27
CWE-79
Fluid Attacks
github.com
cve-2023-3550
stored xss
mediawiki
privilege escalation
xml validation
remote attacker
low-privileged user
administrator role

CVSS3

7.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

AI Score

6.7

Confidence

Low

SSVC

Exploitation

poc

Automatable

no

Technical Impact

total

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.

CVSS3

7.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

AI Score

6.7

Confidence

Low

SSVC

Exploitation

poc

Automatable

no

Technical Impact

total