An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. May 1, 2026 · NIST NVD

   Detected

   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 XML parsing resource amplification from unauthenticated connections.

2. Jun 17, 2026 · NIST NVD

   Updated

   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 XML parsing resource amplification from unauthenticated connections.

Affected

• cpe prosody/prosodyversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-43507

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-43507

  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 XML parsing resource amplification from unauthenticated connections.

  nvd.nist.gov

References

• Third Party Advisory · blog.unionium.org
• Mitigation · prosody.im
• Mailing List · openwall.com