CVE-2023-26477criticalCWE-95

CVE-2023-26477: critical vulnerability in xwiki-platform

org.xwiki.platform:xwiki-platform-flamingo-theme-ui Eval Injection vulnerability

Published · Updated

50Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 10epss 75%
exploitation probability
75%top 1% of all CVEs
observed exploitation
nono source reports it
In short

A vulnerability in XWiki allows attackers to inject and execute arbitrary code (Groovy, Python, Velocity scripts) through a URL parameter called 'newThemeName' when changing themes. This can completely compromise the wiki and any system it runs on.

Technical detail

CWE-95 Code Injection via the 'newThemeName' URL parameter enables unauthenticated remote code execution through wiki syntax macro injection (Groovy, Python, Velocity). Exploitation requires crafting malicious URL parameters; no authentication or special conditions are needed. Impact is critical as arbitrary code execution allows complete system compromise.

Summary generated and translated by AI from the official description.
XWiki Platform is a generic wiki platform. Starting in versions 6.3-rc-1 and 6.2.4, it's possible to inject arbitrary wiki syntax including Groovy, Python and Velocity script macros via the `newThemeName` request parameter (URL parameter), in combination with additional parameters. This has been patched in the supported versions 13.10.10, 14.9-rc-1, and 14.4.6. As a workaround, it is possible to edit `FlamingoThemesCode.WebHomeSheet` and manually perform the changes from the patch fixing the issue.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Affected products
xwiki · xwiki-platform
Related CVEs — xwiki-platform

In the same product, most dangerous first.

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References
https://github.com/xwiki/xwiki-platform/commit/ea2e615f50a918802fd60b09ec87aa04bc6ea8e2#diff-e2153fa59f9d92ef67b0afbf27984bd17170921a3b558fac227160003d0dfd2aR283-R284https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-x2qm-r4wx-8gpghttps://jira.xwiki.org/browse/XWIKI-19757