CVE-2026-43506
HIGHCVSS 7.5/10EPSS 0.28%
Last modified
CVE-2026-43506 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Prosody | Prosody | < 0.12.6 |
| Prosody | Prosody | >= 13.0.0, < 13.0.5 |
References
- https://prosody.im/security/advisory_735dd9d3/Mitigation, Patch, Vendor Advisory
- https://www.openwall.com/lists/oss-security/2026/05/01/5Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is 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 via memory exhaustion caused by memory leaks from unauthenticated connections.
How severe is CVE-2026-43506?
CVE-2026-43506 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2026-43506?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-43506?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST