CVE-2021-30458
Wikimedia Parsoid vulnerable to Cross-site Scripting (XSS)
6.1
MEDIUM
CVSS 3.1
EPSS 0.37%
Description
An issue was discovered in Wikimedia Parsoid before 0.11.1 and 0.12.x before 0.12.2. An attacker can send crafted wikitext that Utils/WTUtils.php will transform by using a <meta> tag, bypassing sanitization steps, and potentially allowing for XSS.
How to fix CVE-2021-30458
To remediate CVE-2021-30458, upgrade the affected package to a fixed version below.
- —upgrade to 1:1.35.2-1 or later
- —upgrade to 0.12.2 or later
Is CVE-2021-30458 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1:1.35.2-1
- >= 0.12, < 0.12.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |