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Fencer Vulns
medium 5.3

CVE-2026-21484 json

AnythingLLM Vulnerable to Username Enumeration w/ Password Recovery

published 2026-01-03 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-0774

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known, plus a Nuclei check

Summary

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.

Patch / fix

  • mintplexlabs anythingllm 1.10.0

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
10 mo ago

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template AnythingLLM - Username Enumeration via Password Recovery nuclei detection template
  • github.com https://github.com/Mintplex-Labs/anything-llm/security/advisories/GHSA-47vr-w3vm-69ch referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

  • Mintplex-Labs anything-llm

Classification

Weakness
  • CWE-203 Observable Discrepancy
  • CWE-204 Observable Response Discrepancy

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.