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TI-2021-12956 Aliases CVE-2021-33563GHSA-r37h-j483-cjjm

Koel before 5.1.4 lacks login throttling, lacks a password strength policy, and shows…

Priority LOW 34CWE-916Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

Koel before 5.1.4 lacks login throttling, lacks a password strength policy, and shows whether a failed login attempt had a valid username. This might make brute-force attacks easier.

Why it matters now

EPSS 0.00809 57th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed phanan/koel (Packagist): 5.1.4

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—phanan/koel (Packagist)before 5.1.45.1.4Patch availableGHSA-r37h-j483-cjjm
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • phanan/koel (Packagist) Vendor— Affected before 5.1.4 Fixed in 5.1.4 Patch available GHSA-r37h-j483-cjjm

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:koel:koel:*:*:*:*:*:*:*:*before 5.1.4Vulnerablekoel
  • cpe:2.3:a:koel:koel:*:*:*:*:*:*:*:* Versions before 5.1.4 Vulnerable ·koel

Remediation

  • Fix · GHSA-r37h-j483-cjjm phanan/koel (Packagist) Fixed in 5.1.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-33563
  2. 2026-10-03 Alias added: GHSA-r37h-j483-cjjm

References

Exploit 1

Advisory 2

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences