Cloudanix VulnDB

CVE-2026-45771

High · 7.5

CVSS

7.5

EPSS

0.5%

Published

Jun 9, 2026

CISA due date

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The record

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.0, FreeSWITCH's bundled XML parser expands nested <!ENTITY> declarations without a depth or count bound, so a small DTD can describe a body that expands exponentially ("billion laughs"). The PIDF body of a SIP PUBLISH is fed to this parser before any digest check, letting an unauthenticated network attacker force unbounded CPU and memory consumption with a single request. This issue has been patched in version 1.11.0.

Affected packages

Ecosystem Package Introduced Fixed

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