# CVE-2021-28399: Information disclosure in n/a

> Unauthenticated attackers can enumerate valid usernames and email addresses via the forgot password function in OrangeHRM.

- **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:** No
- **Published:** 26 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-j4rv-w4j7-w5fq

## What is CVE-2021-28399?

CVE-2021-28399 is a medium-severity vulnerability in n/a, published on 26 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

OrangeHRM 4.7 allows an unauthenticated user to enumerate the valid username and email address via the forgot password function.

## Which versions are affected by CVE-2021-28399?

It affects 1 product.


Products: Orangehrm Orangehrm.

## How do I fix CVE-2021-28399?

No fix has been published for CVE-2021-28399 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-28399 being exploited?

There is no known exploitation of CVE-2021-28399 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2007-1193](https://insights.sbomify.com/CVE-2007-1193/): Other in n/a (critical 9.3)
- [CVE-2025-66224](https://insights.sbomify.com/CVE-2025-66224/): OrangeHRM is Vulnerable to Code Execution Through Arbitrary File Write from Sendmail Parameter Injection (critical 9.0)
- [CVE-2019-12839](https://insights.sbomify.com/CVE-2019-12839/): Command injection in n/a (high 8.8)
- [CVE-2025-66225](https://insights.sbomify.com/CVE-2025-66225/): OrangeHRM is Vulnerable to Account Takeover Through Unvalidated Username in Password Reset Workflow (high 8.7)
- [CVE-2025-66289](https://insights.sbomify.com/CVE-2025-66289/): OrangeHRM is Vulnerable to Persistent Session Access Due to Missing Invalidation After User Disable and Password Change (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-28399 and fix it if it is affected.

What it is: CVE-2021-28399 is a medium-severity vulnerability in n/a, published on 26 Apr 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-2021-28399 in the wild and no public exploit code.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2021-28399/ (Markdown: https://insights.sbomify.com/CVE-2021-28399/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-28399
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-28399
- OSV: https://osv.dev/vulnerability/CVE-2021-28399

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-28399/
Summaries are generated and may contain mistakes; the official description above is the record.