Wikimedia ProofreadPage Extension 1.39/1.43/1.44/1.45 on MediaWiki cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Wikimedia ProofreadPage Extension 1.39/1.43/1.44/1.45 on MediaWiki. This issue affects some unknown processing. The manipulation leads to cross site scripting. This vulnerability is traded as CVE-2026-0670. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Wikimedia ProofreadPage Extension 1.39/1.43/1.44/1.45 on MediaWiki. This issue affects an unknown code. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is:

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki - ProofreadPage Extension allows Cross-Site Scripting (XSS).This issue affects MediaWiki - ProofreadPage Extension: 1.45, 1.44, 1.43, 1.39.

The weakness was shared by SomeRandomDeveloper. It is possible to read the advisory at phabricator.wikimedia.org. The identification of this vulnerability is CVE-2026-0670 since 01/07/2026. The exploitation is known to be easy. The attack may be initiated remotely. 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.

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 CERT Bund (WID-SEC-2026-0035). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Open Source MediaWiki

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.5

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

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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/07/2026 Advisory disclosed
01/07/2026 +0 days CVE reserved
01/07/2026 +0 days VulDB entry created
01/08/2026 +1 days VulDB entry last update

Sourcesinfo

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

CVE: CVE-2026-0670 (🔒)
GCVE (CVE): GCVE-0-2026-0670
GCVE (VulDB): GCVE-100-339959
CERT Bund: WID-SEC-2026-0035 - MediaWiki Erweiterungen: Mehrere Schwachstellen

Entryinfo

Created: 01/07/2026 22:29
Updated: 01/08/2026 19:26
Changes: 01/07/2026 22:29 (55), 01/08/2026 19:26 (7)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

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