CVE-2020-15179CWE-79

HTML Injection in ScratchSig

High · published September 15, 2020

CVSS v3.1
8.0
EPSS
1%
Percentile
68.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.0 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01220 · 68.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2020-09-15T18:10Z
EPSS history
Timeline
  • 15 SEP 18:10Z
    HTML Injection in ScratchSig
    cvelistv5