CVE-2020-15179

HIGH

ScratchSig < 1.0.1 - Stored Cross-Site Scripting via <scratchsig> Tag

Title source: llm
STIX 2.1

Description

The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using <script> tag inside <scratchsig> tag, attackers with edit permission can execute scripts on visitors' browser. With MediaWiki JavaScript API, this can potentially lead to privilege escalation and/or account takeover. This has been patched in release 1.0.1. This has already been deployed to all Scratch Wikis. No workarounds exist other than disabling the extension completely.

References (2)

Core 2

Scores

CVSS v3 8.0
EPSS 0.0122
EPSS Percentile 65.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

Details

CWE
CWE-79
Status published
Products (1)
scratch-wiki/scratchsig < 1.0.1
Published Sep 15, 2020
Tracked Since Feb 18, 2026