Mediawiki 1.40.0 XML File cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Mediawiki 1.40.0. Affected by this issue is some unknown functionality of the component XML File Handler. This manipulation causes cross site scripting. This vulnerability is tracked as CVE-2023-3550. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Mediawiki 1.40.0 (Content Management System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component XML File Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE 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 weakness was disclosed 09/25/2023. It is possible to read the advisory at fluidattacks.com. This vulnerability is known as CVE-2023-3550 since 07/08/2023. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 246686 (Linux Distros Unpatched Vulnerability : CVE-2023-3550), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (246686). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.0
NVD Vector: 🔍

CNA Base Score: 7.3
CNA Vector (Fluid Attacks): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 246686
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-3550

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/08/2023 🔍
09/25/2023 +79 days 🔍
09/25/2023 +0 days 🔍
08/09/2025 +684 days 🔍

Sourcesinfo

Product: mediawiki.org

Advisory: fluidattacks.com
Status: Not defined

CVE: CVE-2023-3550 (🔍)
GCVE (CVE): GCVE-0-2023-3550
GCVE (VulDB): GCVE-100-240307

Entryinfo

Created: 09/25/2023 19:34
Updated: 08/09/2025 17:01
Changes: 09/25/2023 19:34 (48), 10/16/2023 09:07 (11), 06/11/2024 00:41 (15), 04/21/2025 19:24 (4), 08/09/2025 17:01 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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