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TI-2021-15483 Aliases CVE-2021-37601GHSA-h6g2-mc2x-j8wm

muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive…

Priority LOW 37Published · 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
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive information (list of admins, members, owners, and banned entities of a Multi-User chat room) in some common configurations.

Why it matters now

EPSS 0.02329 83rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*0.11.0 – 0.11.9VulnerableProsody
  • cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:* Versions 0.11.0 – 0.11.9 Vulnerable ·Prosody

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-37601
  2. 2026-10-03 Alias added: GHSA-h6g2-mc2x-j8wm

References

Exploit 1

Advisory 4

  • TI-2022-00154 XML external entity injection in prosody CVSS 3.1HIGH 7.5
  • TI-2018-07663 Improper authentication in [UNKNOWN] prosody CVSS 3.0HIGH 8.8
  • TI-2014-02196 Prosody before 0.9.4 does not properly restrict the processing of compressed XML… CVSS 2.0HIGH 7.8
  • TI-2014-02195 plugins/mod_compression.lua in (1) Prosody before 0.9.4 and (2) Lightwitch Metronome… CVSS 2.0HIGH 7.8
  • TI-2026-31684 Resource allocation without limits in Prosody CVSS 3.1HIGH 7.5
  • TI-2026-31683 Memory leak in Prosody CVSS 3.1HIGH 7.5
See all 20 →

Sources

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