CVE-2021-29459

Public Exploit

XSS Cross Site Scripting

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible to persistently inject scripts in XWiki versions prior to 12.6.3 and 12.8. Unregistred users can fill simple text fields. Registered users can fill in their personal information and (if they have edit rights) fill the values of static lists using App Within Minutes. There is no easy workaround except upgrading XWiki. The vulnerability has been patched on XWiki 12.8 and 12.6.3.

References

Link	Tags
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-5c66-v29h-xjh8	third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-29459?: CVE-2021-29459 has been scored as a critical severity vulnerability.
How to fix CVE-2021-29459?: To fix CVE-2021-29459, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-29459 being actively exploited in the wild?: It is possible that CVE-2021-29459 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29459?: CVE-2021-29459 affects xwiki xwiki-platform.

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Description

Category

CWE-79 – Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

Frequently Asked Questions