Denial of Service Vulnerability in Prosody by Prosody Systems
CVE-2026-43507

5.3MEDIUM

Key Information:

Vendor

Prosody

Status
Prosody
Vendor
CVE Published:
1 May 2026

What is CVE-2026-43507?

A vulnerability exists in the Prosody software, which can lead to Denial of Service outcomes due to memory exhaustion. This issue arises from XML parsing resource amplification when triggered by unauthenticated connections, potentially impacting service availability. It is crucial for users and administrators to apply necessary patches and follow security guidelines to mitigate risks associated with this vulnerability.

Affected Version(s)

Prosody 0 < 0.12.6

Prosody 1.0.0 < 13.0.5

References

https://www.openwall.com/lists/oss-security/2026/05/01/5
https://prosody.im/security/advisory_735dd9d3/
https://blog.unionium.org/ARTICLES/1.HTM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.