MediaWiki up to 1.31.12/1.35.1 VisualEditor Extension information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaWiki up to 1.31.12/1.35.1. It has been rated as problematic. Impacted is an unknown function of the component VisualEditor Extension. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2021-30153. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in MediaWiki up to 1.31.12/1.35.1 (Content Management System) and classified as problematic. This issue affects an unknown function of the component VisualEditor Extension. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) This is related to ApiVisualEditor.

The weakness was released 04/15/2023. The advisory is shared at lists.wikimedia.org. The identification of this vulnerability is CVE-2021-30153 since 04/06/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 1.31.13 or 1.35.2 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MediaWiki 1.31.13/1.35.2

Timelineinfo

04/06/2021 🔍
04/15/2023 +739 days 🔍
04/15/2023 +0 days 🔍
02/06/2025 +663 days 🔍

Sourcesinfo

Product: mediawiki.org

Advisory: lists.wikimedia.org
Status: Confirmed

CVE: CVE-2021-30153 (🔍)
GCVE (CVE): GCVE-0-2021-30153
GCVE (VulDB): GCVE-100-226121

Entryinfo

Created: 04/15/2023 23:02
Updated: 02/06/2025 18:53
Changes: 04/15/2023 23:02 (40), 02/06/2025 18:53 (25)
Complete: 🔍
Cache ID: 216::103

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