CVE-2021-32732

Public Exploit
Cross-Site Request Forgery in xwiki-platform

Description

### Impact It's possible to know if a user has or not an account in a wiki related to an email address, and which username(s) is actually tied to that email by forging a request to the Forgot username page. Note that since this page does not have a CSRF check it's quite easy to perform a lot of those requests. ### Patches This issue has been patched in XWiki 12.10.5 and 13.2RC1. Two different patches are provided: - a first one to fix the CSRF problem - a more complex one that now relies on sending an email for the Forgot username process. ### Workarounds It's possible to fix the problem without uprading by editing the ForgotUsername page in version below 13.x, to use the following code: https://github.com/xwiki/xwiki-platform/blob/69548c0320cbd772540cf4668743e69f879812cf/xwiki-platform-core/xwiki-platform-administration/xwiki-platform-administration-ui/src/main/resources/XWiki/ForgotUsername.xml#L39-L123 In version after 13.x it's also possible to edit manually the forgotusername.vm file, but it's really encouraged to upgrade the version here. ### References * https://jira.xwiki.org/browse/XWIKI-18384 * https://jira.xwiki.org/browse/XWIKI-18408 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWiki](https://jira.xwiki.org) * Email us at [security ML](mailto:security@xwiki.org)

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory xwiki.org Vendor Advisory xwiki.org
Affected: xwiki xwiki-platform
Published at:
Updated at:

References

Link Tags
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vh5c-jqfg-mhrh mitigation third party advisory
https://github.com/xwiki/xwiki-platform/commit/69548c0320cbd772540cf4668743e69f879812cf third party advisory patch
https://github.com/xwiki/xwiki-platform/commit/f0440dfcbba705e03f7565cd88893dde57ca3fa8 third party advisory patch
https://jira.xwiki.org/browse/XWIKI-18384 patch vendor advisory exploit
https://jira.xwiki.org/browse/XWIKI-18408 patch vendor advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-32732?
CVE-2021-32732 has been scored as a high severity vulnerability.
How to fix CVE-2021-32732?
To fix CVE-2021-32732, 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-2021-32732 being actively exploited in the wild?
It is possible that CVE-2021-32732 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-2021-32732?
CVE-2021-32732 affects xwiki xwiki-platform.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.