CVE-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…
CVE-2026-43507 · Severity: medium · CVSS 5.3 · Published 2026-05-01
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.
No. Junglewise Threat Intelligence has no report of CVE-2026-43507 being exploited in the wild.
How severe is CVE-2026-43507?
Medium severity, with a CVSS score of 5.3, published 1 May 2026.
Which products and versions are affected?
Prosody. The advisory does not name versions.
Is there a fix for CVE-2026-43507?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-43507?
Check whether you run Prosody. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.