High severity · published May 1, 2026
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
7.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Prosody · Prosody
before 0.12.6; 1.0.0 before 13.0.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43506
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43506
Mitigation
https://prosody.im/security/advisory_735dd9d3/
Mailing List
https://www.openwall.com/lists/oss-security/2026/05/01/5
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