CVE-2021-30458
MEDIUM
6.1
CVSS Score
Published: April 9, 2021 at 06:06 AM UTC
Updated: June 17, 2026 at 03:50 AM UTC
1 product affected across 1 vendorParsoid
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Severity
MEDIUM6.1
Exploit prediction
EPSS 1.0%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 0.11.10.12.0 ≤ v < 0.12.2
Affected range stops below 0.11.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.12.2, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
x_refsource_MISCIssue TrackingVendor Advisory
Source: [email protected]
https://phabricator.wikimedia.org/T279451Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202107-40CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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