Thanks Extension/Growth Experiments Extension 1.43 on Mediawiki default permission

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Thanks Extension and Growth Experiments Extension 1.43 on Mediawiki. Affected by this vulnerability is an unknown functionality. The manipulation leads to default permission. This vulnerability is traded as CVE-2025-62661. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Thanks Extension and Growth Experiments Extension 1.43 on Mediawiki. It has been rated as critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a default permission vulnerability. Using CWE to declare the problem leads to CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Incorrect Default Permissions vulnerability in The Wikimedia Foundation Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects Mediawiki - Thanks Extension, Mediawiki - Growth Experiments Extension: from 1.43 before 1.44.

The weakness was shared by dom_walden. It is possible to read the advisory at phabricator.wikimedia.org. The identification of this vulnerability is CVE-2025-62661 since 10/18/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK.

Upgrading to version 1.44 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-2381). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Open Source MediaWiki

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Default permission
CWE: CWE-276 / 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: Thanks Extension/Growth Experiments Extension 1.44

Timelineinfo

10/18/2025 CVE reserved
10/22/2025 +4 days Advisory disclosed
10/22/2025 +0 days VulDB entry created
10/22/2025 +0 days VulDB entry last update

Sourcesinfo

Advisory: phabricator.wikimedia.org
Researcher: dom_walden
Status: Confirmed

CVE: CVE-2025-62661 (🔒)
GCVE (CVE): GCVE-0-2025-62661
GCVE (VulDB): GCVE-100-329219
CERT Bund: WID-SEC-2025-2381 - MediaWiki: Mehrere Schwachstellen

Entryinfo

Created: 10/22/2025 04:42
Updated: 10/22/2025 14:39
Changes: 10/22/2025 04:42 (67), 10/22/2025 14:39 (7)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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