RenderBlocking is a MediaWiki extension that allows interface administrators to specify render-blocking CSS and JavaScript. Prior to 0.1.1, there is Stored XSS in renderblocking-css with Inline Assets mode. $wgRenderBlockingInlineAssets = true and editsitecss user rights are required. This vulnerability is fixed in 0.1.1.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
High
Admin privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/lihaohong6/RenderBlocking/commit/096fc47dad9dca153b02cba3db8…
security-advisories@github.com
https://github.com/lihaohong6/RenderBlocking/releases/tag/v0.1.1
security-advisories@github.com
https://github.com/lihaohong6/RenderBlocking/security/advisories/GHSA-4h5r-8rjm…
security-advisories@github.com