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cvelistFluid AttacksCVELIST: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
www.cve.org
2
cve-2023-3550
stored xss
mediawiki v1.40.0
xml files
remote attacker
administrator
exploit

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

7.2

Confidence

High

EPSS

0.001

Percentile

46.8%

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.

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "MacOS"
    ],
    "product": "MediaWiki",
    "vendor": "MediaWiki",
    "versions": [
      {
        "status": "affected",
        "version": "1.40.0"
      }
    ]
  }
]

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

7.2

Confidence

High

EPSS

0.001

Percentile

46.8%