MediaWiki up to 1.35.5/1.36.3/1.37.1 Special:NewFiles denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in MediaWiki up to 1.35.5/1.36.3/1.37.1 (Content Management System). It has been rated as problematic. This issue affects an unknown functionality of the file Special:NewFiles. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The program does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

A denial-of-service issue was discovered in MediaWiki before 1.35.6, 1.36.x before 1.36.4, and 1.37.x before 1.37.2. When many files exist, requesting Special:NewFiles with actor as a condition can result in a very long running query.

The weakness was published 09/20/2022. The advisory is shared at The identification of this vulnerability is CVE-2022-28203 since 03/30/2022. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 1.35.6, 1.36.4 or 1.37.2 eliminates this vulnerability.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 7.5
NVD Vector: 🔒



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


Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: MediaWiki 1.35.6/1.36.4/1.37.2


03/30/2022 CVE reserved
09/20/2022 +174 days Advisory disclosed
09/20/2022 +0 days VulDB entry created
10/21/2022 +31 days VulDB last update



Advisory: DLA 3117-1
Status: Confirmed

CVE: CVE-2022-28203 (🔒)


Created: 09/20/2022 08:55 AM
Updated: 10/21/2022 08:27 AM
Changes: 09/20/2022 08:55 AM (40), 10/21/2022 08:24 AM (1), 10/21/2022 08:27 AM (11)
Complete: 🔍


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