What’s Vulnerable › Vulnerabilities

CVE-2026-43506

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-01 · updated 2026-06-17
• Weakness: CWE-401

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.

Affected products

• Prosody: before 0.12.6; from 13.0.0 before 13.0.5 — fixed in 0.12.6, 13.0.5

How to fix

Upgrade to a fixed version: Prosody 0.12.6, 13.0.5. Check the vendor advisory for mitigations.

References

• https://prosody.im/security/advisory_735dd9d3/
• https://www.openwall.com/lists/oss-security/2026/05/01/5

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