CVE-2026-43507 PUBLISHED

Assigner: mitre
Reserved: 01.05.2026 Published: 01.05.2026 Updated: 01.05.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Prosody
Product	Prosody
Versions	Default: unaffected affected from 0 to 0.12.6 (excl.) affected from 1.0.0 to 13.0.5 (excl.)

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

Problem Types

CWE-770 Allocation of Resources Without Limits or Throttling CWE