{"id":"CVE-2026-45771","summary":"Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion","details":"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 \u003c!ENTITY\u003e 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.","aliases":["GHSA-5vjg-pv56-vg4c"],"modified":"2026-08-04T11:51:00.410377164Z","published":"2026-06-09T15:51:49.484Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45771.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-776"]},"references":[{"type":"WEB","url":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45771.json"},{"type":"ADVISORY","url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-5vjg-pv56-vg4c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45771"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/signalwire/freeswitch","events":[{"introduced":"0"},{"fixed":"79e3f643ae0b22072471b262bee3aa44e94a7614"}],"database_specific":{"cpe":"cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.11.0"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v1.10.12","v1.10.11","v1.10.10","v1.10.9","v1.10.8","v1.10.7","v1.10.6","v1.10.5","v1.10.4","v1.10.3","v1.10.2","v1.10.1","v1.10.0","v1.6.0","v1.5.final","v1.5.14","v1.5.13","v1.5.12","v1.5.10","v.15.9","v1.5.8","v1.5.5","v1.5.2","v1.5.1","v1.5.0","v1.3.17-final","v1.3.16","v1.3.15","v1.3.14","v1.3.13","v1.3.12","v.1.3.12","v0.0.1","v1.3.11","v1.3.10","v1.3.9","v1.3.8","v1.3.7","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2-rc2","v1.2-rc1","git2svn-syncpoint-master"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45771.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}