CVE-2026-43507: High severity Prosody prosody vulnerability
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
alpine/prosodyto a version that resolves this vulnerability.Fixed in 0.12.6-r0 - Upgrade
Upgrade
alpine/prosodyto a version that resolves this vulnerability.Fixed in 13.0.5-r0 - Upgrade
Upgrade
debian/prosodyto a version that resolves this vulnerability.Fixed in 0.12.3-1+deb12u1 - Upgrade
Upgrade
debian/prosodyto a version that resolves this vulnerability.Fixed in 13.0.1-1+deb131u - Upgrade
Upgrade
debian/prosodyto a version that resolves this vulnerability.Fixed in 13.0.5-1 - Upgrade
Upgrade
debian/prosodyto a version that resolves this vulnerability.Fixed in 0.12.3-1+deb12u1Fixed in 13.0.1-1+deb131uFixed in 13.0.7-1
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43507?
CVE-2026-43507 has a high severity due to its potential to cause Denial of Service through memory exhaustion.
How do I fix CVE-2026-43507?
To fix CVE-2026-43507, upgrade Prosody to version 0.12.6 or any of the versions between 1.0.0 and 13.0.5 inclusive.
What types of systems are affected by CVE-2026-43507?
CVE-2026-43507 affects Prosody versions before 0.12.6 and between 1.0.0 and 13.0.0 before 13.0.5.
Can CVE-2026-43507 be exploited remotely?
Yes, CVE-2026-43507 can be exploited via unauthenticated remote connections that lead to memory exhaustion.
What are the implications of CVE-2026-43507 for users?
Users of affected Prosody versions may experience service disruptions due to Denial of Service caused by XML parsing resource amplification.