# CVE-2021-32731: The reset password form reveal users email address

> An attacker can obtain user email addresses by submitting usernames to the password reset form, exposing sensitive personal information.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 1 Jul 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-h4m4-pgp4-whgm

## What is CVE-2021-32731?

CVE-2021-32731 is a medium-severity vulnerability in Xwiki Xwiki, published on 1 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Between (and including) versions 13.1RC1 and 13.1, the reset password form reveals the email address of users just by giving their username. The problem has been patched on XWiki 13.2RC1. As a workaround, it is possible to manually modify the `resetpasswordinline.vm` to perform the changes made to mitigate the vulnerability.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-32731?

2 open source packages ship an affected version, including org.xwiki.platform:xwiki-platform-web. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.xwiki.platform:xwiki-platform-web` | Maven | From 13.1 | 13.2 |
| `org.xwiki.platform:xwiki-platform-web` | Maven | From 13.1 | 13.2 |

Products: Xwiki Xwiki.

## How do I fix CVE-2021-32731?

Upgrade org.xwiki.platform:xwiki-platform-web to 13.2 or later.

## Is CVE-2021-32731 being exploited?

There is no known exploitation of CVE-2021-32731 in the wild and no public exploit code.

## Other vulnerabilities in Xwiki Xwiki

- [CVE-2025-24893](https://insights.sbomify.com/CVE-2025-24893/): XWiki Platform Eval Injection (critical 9.8, exploited in the wild)
- [CVE-2025-53836](https://insights.sbomify.com/CVE-2025-53836/): XWiki Rendering is vulnerable to RCE attacks when processing nested macros (critical 10.0)
- [CVE-2024-55662](https://insights.sbomify.com/CVE-2024-55662/): XWiki allows remote code execution through the extension sheet (critical 10.0)
- [CVE-2024-55877](https://insights.sbomify.com/CVE-2024-55877/): XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList (critical 10.0)
- [CVE-2024-37901](https://insights.sbomify.com/CVE-2024-37901/): XWiki Platform vulnerable to remote code execution from account via SearchSuggestConfigSheet (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32731 and fix it if it is affected.

What it is: CVE-2021-32731 is a medium-severity vulnerability in Xwiki Xwiki, published on 1 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-32731 in the wild and no public exploit code.

Affected packages and fixed versions:
- org.xwiki.platform:xwiki-platform-web (Maven): affected from 13.1; fixed in 13.2
- org.xwiki.platform:xwiki-platform-web (Maven): affected from 13.1; fixed in 13.2

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-32731/ (Markdown: https://insights.sbomify.com/CVE-2021-32731/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32731
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32731
- OSV: https://osv.dev/vulnerability/CVE-2021-32731

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32731/
Summaries are generated and may contain mistakes; the official description above is the record.