# CVE-2026-45771

## Summary

- **CVE ID:** CVE-2026-45771
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-776
- **Published:** Jun 9, 2026
- **Last Modified:** Jun 9, 2026

## Description

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 Products

- signalwire — freeswitch (< 1.11.0)

## References

- [CNA](https://github.com/signalwire/freeswitch/security/advisories/GHSA-5vjg-pv56-vg4c)
- [CNA](https://github.com/signalwire/freeswitch/releases/tag/v1.11.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 27.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._