VDB-224692 · CVE-2023-29137 · EUVD-2023-32740

GrowthExperiments Extension up to 1.39.3 on MediaWiki Timezone information disclosure

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in GrowthExperiments Extension up to 1.39.3 on MediaWiki. It has been declared as problematic. The affected element is an unknown function of the component Timezone Handler. Executing a manipulation can lead to information disclosure. This vulnerability is tracked as CVE-2023-29137. No exploit exists.

Detailsinfo

A vulnerability was found in GrowthExperiments Extension up to 1.39.3 on MediaWiki. It has been declared as problematic. This vulnerability affects some unknown processing of the component Timezone Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

An issue was discovered in the GrowthExperiments extension for MediaWiki through 1.39.3. The UserImpactHandler for GrowthExperiments inadvertently returns the timezone preference for arbitrary users, which can be used to de-anonymize users.

The weakness was disclosed 03/31/2023. The advisory is shared for download at phabricator.wikimedia.org. This vulnerability was named CVE-2023-29137 since 03/31/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

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 EUVD (EUVD-2023-32740). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

GrowthExperiments Extension

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.9
VulDB Meta Temp Score: 3.9

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

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/31/2023 🔍
03/31/2023 +0 days 🔍
03/31/2023 +0 days 🔍
12/08/2025 +983 days 🔍

Sourcesinfo

Advisory: phabricator.wikimedia.org
Status: Confirmed

CVE: CVE-2023-29137 (🔍)
GCVE (CVE): GCVE-0-2023-29137
GCVE (VulDB): GCVE-100-224692
EUVD: 🔍

Entryinfo

Created: 03/31/2023 21:35
Updated: 12/08/2025 03:42
Changes: 03/31/2023 21:35 (38), 04/21/2023 09:16 (11), 12/08/2025 03:42 (16)
Complete: 🔍
Cache ID: 216::103