What is the CVSS score of CVE-2023-3550?

CVE-2023-3550 has a CVSS 3.1 base score of 7.3 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N. EPSS exploitation probability: 1.2%.

Is there a public PoC exploit available for CVE-2023-3550?

Yes, a public proof-of-concept exploit is available for CVE-2023-3550. Prioritise patching immediately. EPSS: 1.2%.

Mediawiki CVE-2023-3550

HIGH

Cross-site Scripting (XSS) (CWE-79)

2023-09-25 help@fluidattacks.com

XSS Mediawiki Debian Linux

7.3

CVSS 3.1 · Vendor: fluidattacks

Severity by source

Vendor (fluidattacks) PRIMARY

7.3 HIGH

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

Primary rating from Vendor (fluidattacks) · only source for this CVE.

CVSS VectorVendor: fluidattacks

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

CVE Published

Sep 25, 2023 - 16:15 cve.org

HIGH 7.3

DescriptionCVE.org

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.

AnalysisAI

Mediawiki v1.40.0 does not validate namespaces used in XML files. Rated high severity (CVSS 7.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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 products include: Mediawiki, Debian Debian Linux.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.