CVE-2020-15179
High
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.
SeverityHigh
CVSS8.0
Exploit probability—
ProductScratch-wiki Scratchsig
PublishedSep 15, 2020
First seenSep 15, 2020
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- scratch-wiki scratchsig1.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| scratch-wiki scratchsig | v < 1.0.1 | 1.0.1 |
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