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

Quick assessment

Affected
Mintplex-Labs anything-llm
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

AnythingLLM是Mintplex开源的一个一体化AI应用程序。 AnythingLLM存在安全漏洞，该漏洞源于密码恢复端点返回不同错误信息，可能导致用户名枚举。

CVSS 5.3 · Medium EPSS 0.77% · P54

Public Exploits 1

Nuclei · 1 CVE-2026-21484.yaml [template]

Possible ATT&CK Techniques 1 AI

T1110.001 · Password Guessing
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I. Basic Information for CVE-2026-21484

Vulnerability Information
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Vulnerability Title
AnythingLLM Vulnerable to Username Enumeration w/ Password Recovery
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
AnythingLLM 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AnythingLLM是Mintplex开源的一个一体化AI应用程序。 AnythingLLM存在安全漏洞，该漏洞源于密码恢复端点返回不同错误信息，可能导致用户名枚举。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Mintplex-Labs anything-llm < e287fab56089cf8fcea9ba579a3ecdeca0daa313 -

II. Public POCs for CVE-2026-21484

# POC Description Source Link Shenlong Link
1 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. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-21484.yaml POC Details
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III. Intelligence Information for CVE-2026-21484

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Patches & Fixes for CVE-2026-21484 (1)

Vendor Advisories for CVE-2026-21484 (1)

IV. Related Vulnerabilities

Same product: anything-llm
Same vendor: Mintplex-Labs
Same weakness: CWE-203

V. Comments for CVE-2026-21484

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