CVE-2021-21379
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CVSS Score
V3.1EPSS Score
v2025.03.14There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.
Attack Vector Metrics
Impact Metrics
Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. In affected versions of XWiki Platform, the `{{wikimacrocontent}}` executes the content with the rights of the wiki macro author instead of the caller of that wiki macro. This makes possible to inject scripts through it and they will be executed with the rights of the wiki macro (very often a user which has Programming rights). Fortunately, no such macro exists by default in XWiki Standard but one could have been created or installed with an extension. This vulnerability has been patched in versions XWiki 12.6.3, 11.10.11 and 12.8-rc-1. There is no easy workaround other than disabling the affected macros. Inserting content in a safe way or knowing what is the user who called the wiki macro is not easy.
Available Exploits
Related News
Affected Products
Affected Versions:
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
It's possible to execute anything with the rights of the author of a macro which uses the {{wikimacrocontent}} macro
GHSA-v662-xpcc-9xf6Advisory Details
Affected Packages
CVSS Scoring
CVSS Score
References
Advisory provided by GitHub Security Advisory Database. Published: March 23, 2021, Modified: March 23, 2021