# CVE-2026-43506: 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…

Source: https://junglewise.ai/threats/cve-2026-43506-an-issue-was-discovered-in-prosody-before-0-12-6-and-1-0-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-01  
License: CC BY 4.0 with a link back

CVE-2026-43506 · 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 memory leaks from unauthenticated connections.

Technologies: [Prosody](https://junglewise.ai/threats/technologies/prosody). Vendors: [Prosody](https://junglewise.ai/threats/vendors/prosody).

## Quick answers

**Is CVE-2026-43506 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-43506 being exploited in the wild.

**How severe is CVE-2026-43506?** 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-2026-43506?** 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-2026-43506?** 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.

## Affected products

- Prosody

## Related threats

- [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…](https://junglewise.ai/threats/cve-2026-43507-an-issue-was-discovered-in-prosody-before-0-12-6-and-1-0-0)
- [An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is enabled…](https://junglewise.ai/threats/cve-2026-43505-an-issue-was-discovered-in-prosody-before-0-12-6-and-1-0-0)
- [An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is enabled…](https://junglewise.ai/threats/cve-2026-43504-an-issue-was-discovered-in-prosody-before-0-12-6-and-1-0-0)