# CVE-2026-21484: AnythingLLM Vulnerable to Username Enumeration w/ Password Recovery

> Attackers can enumerate valid usernames via inconsistent error messages in the password recovery endpoint of AnythingLLM.

- **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:** 3 Jan 2026
- **Updated:** 5 Jan 2026
- **Also known as:** GHSA-47vr-w3vm-69ch

## What is CVE-2026-21484?

CVE-2026-21484 is a medium-severity vulnerability in Mintplexlabs Anythingllm, published on 3 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

AnythingLLM is an application that turns pieces of content into context that any LLM can use as references during chatting. Prior to commit e287fab56089cf8fcea9ba579a3ecdeca0daa313, the password recovery endpoint returns different error messages depending on whether a username exists, so enabling username enumeration. Commit e287fab56089cf8fcea9ba579a3ecdeca0daa313 fixes this issue.

Weakness: CWE-204 (Observable Response Discrepancy), CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2026-21484?

It affects 1 product.


Products: Mintplexlabs Anythingllm.

## How do I fix CVE-2026-21484?

No fix has been published for CVE-2026-21484 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-21484 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21484 exists.

Public exploit code:

- AnythingLLM - Username Enumeration via Password Recovery (nuclei): http/cves/2026/CVE-2026-21484.yaml

## Other vulnerabilities in Mintplexlabs Anythingllm

- [CVE-2024-3025](https://insights.sbomify.com/CVE-2024-3025/): Path Traversal in mintplex-labs/anything-llm (critical 9.9)
- [CVE-2024-0455](https://insights.sbomify.com/CVE-2024-0455/): SSRF on AWS deployed instances of AnythingLLM via /metadata (critical 9.9)
- [CVE-2026-32626](https://insights.sbomify.com/CVE-2026-32626/): AnythingLLM has a Streaming Phase XSS to RCE via LLM Response Injection (critical 9.7)
- [CVE-2024-3104](https://insights.sbomify.com/CVE-2024-3104/): Remote Code Execution in mintplex-labs/anything-llm (critical 9.6)
- [CVE-2024-3149](https://insights.sbomify.com/CVE-2024-3149/): SSRF in mintplex-labs/anything-llm (critical 9.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-21484 and fix it if it is affected.

What it is: CVE-2026-21484 is a medium-severity vulnerability in Mintplexlabs Anythingllm, published on 3 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-21484 exists.

Affected product: Mintplexlabs Anythingllm. 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-2026-21484/ (Markdown: https://insights.sbomify.com/CVE-2026-21484/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-21484
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-21484
- OSV: https://osv.dev/vulnerability/CVE-2026-21484

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-21484/
Summaries are generated and may contain mistakes; the official description above is the record.