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TI-2026-31683 Aliases CVE-2026-43506GHSA-q553-9xvw-ww8h

Memory leak in Prosody

Priority LOW 39CWE-401Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-401.

Summary

An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5. A Denial of Service can occur via memory exhaustion caused by memory leaks from unauthenticated connections.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00279 20th percentileScored 2026-11-07
Fix Fixed Prosody (Prosody): 0.12.6, 13.0.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ProsodyProsodybefore 0.12.6; 1.0.0 to before 13.0.50.12.6, 13.0.5Patch availableCNA
  • Prosody VendorProsody Affected before 0.12.6; 1.0.0 to before 13.0.5 Fixed in 0.12.6, 13.0.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:*before 0.12.6; 13.0.0 to before 13.0.5VulnerableProsody
  • cpe:2.3:a:prosody:prosody:*:*:*:*:*:*:*:* Versions before 0.12.6; 13.0.0 to before 13.0.5 Vulnerable ·Prosody

Remediation

  • Fix · CNA Prosody (Prosody) Fixed in 0.12.6, 13.0.5

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Prosody 0.12.6, 13.0.5

    4 records Highest priority Priority LOW 4 LOW

    Other records, highest priority first

    • TI-2026-31684 Resource allocation without limits in ProsodyPriority LOW 39
    • TI-2026-31682 An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5…Priority LOW 34
    • TI-2026-31681 Incorrect authorization in ProsodyPriority LOW 34
    Show all 4 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-43506
  2. 2026-10-03 Alias added: GHSA-q553-9xvw-ww8h

References

Patch 2

  • 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-2021-15483 muc.lib.lua in Prosody 0.11.0 through 0.11.9 allows remote attackers to obtain sensitive… 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