How severe is CVE-2021-32731?

CVE-2021-32731 has a CVSS score of 5.3/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by CVE-2021-32731?

CVE-2021-32731 affects the following packages: org.xwiki.platform:xwiki-platform-web (Maven). Ecosystems affected: Maven.

How do I fix CVE-2021-32731?

Update org.xwiki.platform:xwiki-platform-web to 13.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-32731 is resolved across your whole dependency graph.

How do I detect CVE-2021-32731 in my Maven dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-web, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2021-32731 if there is no patch (or I can't update yet)?

Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Is CVE-2021-32731 actively exploited in the wild?

No public exploit code has been indexed for CVE-2021-32731 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2021-32731?

CVE-2021-32731 has an EPSS (Exploit Prediction Scoring System) score of 1.2%, placing it in the 67th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2021-32731?

CVE-2021-32731 is classified as Information Exposure (CWE-200). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2021-32731 published, and has it been updated?

CVE-2021-32731 was published on July 1, 2021 and was last updated on August 7, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

MEDIUM severity

CVE-2021-32731 — xwiki-platform-web

MEDIUMFix: xwiki/xwiki-platform@0cf7162

CVE-2021-32731 is a medium-severity (CVSS 5.3) Information Exposure vulnerability in org.xwiki.platform:xwiki-platform-web. A fix is available for org.xwiki.platform:xwiki-platform-web — see the affected versions and patch details below.

The reset password form reveal users email address

Also known asGHSA-h4m4-pgp4-whgm

Published

Jul 1, 2021

Updated

Aug 7, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Oct 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

1.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs67th percentile — riskier than 67% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2021-32731 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected

☕org.xwiki.platform:xwiki-platform-web

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Impact

The reset password form reveals the email address of users just by giving their username.

Patches

The problem has been patched on XWiki 13.2RC1.

Workarounds

It's possible to manually modify the resetpasswordinline.vm to perform the changes made in https://github.com/xwiki/xwiki-platform/commit/0cf716250b3645a5974c80d8336dcdf885749dff#diff-14a3132e3986b1f5606dd13d9d8a8bb8634bec9932123c5e49e9604cfd850fc2

References

https://jira.xwiki.org/browse/XWIKI-18400

For more information

If you have any questions or comments about this advisory:

Open an issue in Jira XWiki
Email us at Security ML

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.xwiki.platform:xwiki-platform-web`	≥ 13.1&&< 13.2	13.2`org.xwiki.platform:xwiki-platform-web:13.2`

Affected Products

1 product · 2 configurations

Application

xwikixwiki

1 version

13.1

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.xwiki.platform:xwiki-platform-web, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.xwiki.platform:xwiki-platform-web to 13.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-32731 is resolved across your whole dependency graph.
Workarounds
Assume what was exposed is already known: rotate any credential, token or key that the affected component could return, restrict the endpoint to callers that genuinely need it, and strip sensitive fields from responses and error output at the boundary rather than relying on the client not to read them.

Frequently Asked Questions

### Impact The reset password form reveals the email address of users just by giving their username. ### Patches The problem has been patched on XWiki 13.2RC1. ### Workarounds It's possible to manually modify the `resetpasswordinline.vm` to perform the changes made in https://github.com/xwiki/xwiki-platform/commit/0cf716250b3645a5974c80d8336dcdf885749dff#diff-14a3132e3986b1f5606dd13d9d8a8bb8634bec9932123c5e49e9604cfd850fc2 ### References https://jira.xwiki.org/browse/XWIKI-18400 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Jira XWi