CVE-2026-45771

FreeSWITCH (before version 1.11.0) is vulnerable to a Denial-of-Service via its bundled XML parser, which expands nested declarations without a bound, allowing an unauthenticated attacker to drive unbounded CPU/memory usage by sending a crafted SIP PUBLISH PIDF body. The issue arises because the...

CVE-2026-45771 Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion

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 declarations without a depth or count boun...

EUVD-2026-35468

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 declarations without a depth or count boun...

CVE-2026-45771 Freeswitch Denial-of-Service in SIP PUBLISH Requests via XML Entity Expansion

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 declarations without a depth or count boun...

FreeSWITCH 安全漏洞

FreeSWITCH is a free and open-source communication software developed by Anthony Minessale, an individual developer from the United States. This software can be used to create audio, video, and short message-based products and applications. Prior to FreeSWITCH 1.11.0, there were security...

PT-2026-47849

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 1.11.1, mod verto's WebSocket frame loop intercepts a -prefixed speed-test protocol SPU / SPB / S...

PT-2026-47851

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 1.11.1, a single unauthenticated WebSocket frame containing a deeply nested JSON document crashes...

PT-2026-47846

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, a STUN packet whose declared attribute length is shorter than the structure the parser...

FreeSWITCH 安全漏洞

FreeSWITCH is a free and open-source communication software developed by Anthony Minessale, an individual developer from the United States. This software can be used to create audio, video, and short message-based products and applications. Prior to FreeSWITCH version 1.11.1, there was a security...

FreeSWITCH 授权问题漏洞

FreeSWITCH is a free and open-source communication software developed by Anthony Minessale, an individual developer from the United States. This software can be used to create audio, video, and short message-based products and applications. Prior to FreeSWITCH version 1.11.1, there was an...

FreeSWITCH 授权问题漏洞

FreeSWITCH is a free and open-source communication software developed by Anthony Minessale, an individual developer from the United States. This software can be used to create audio, video, and short message-based products and applications. Prior to FreeSWITCH version 1.11.1, there was an...

PT-2026-47847

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 1.11.1, esl recv event parses Content-Length with atol and passes the result straight to mallocle...

FreeSWITCH 输入验证错误漏洞

FreeSWITCH is a free and open-source communication software developed by Anthony Minessale, an individual developer from the United States. This software can be used to create audio, video, and short message-based products and applications. Prior to FreeSWITCH version 1.11.1, there was a...

CVE-2026-49847: Uncontrolled Recursion

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 1.11.1, a single unauthenticated WebSocket frame containing a deeply nested JSON document crashes...

CVE-2026-49848: Improper Authentication

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 1.11.1, modverto's checkauth userauth branch wrote request-supplied userVariables into the...

CVE-2026-49843: Improper Authentication

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 1.11.1, modverto's JSON-RPC handler bound the connection to the client-supplied sessid on the fir...

CVE-2026-49841: Heap-based Buffer Overflow

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 1.11.1, the modverto HTTP request handler allocates a fixed 2 MiB buffer for a POST...

CVE-2026-49842: Uncontrolled Resource Consumption

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 1.11.1, modverto's WebSocket frame loop intercepts a -prefixed speed-test protocol SPU / SPB / SP...

CVE-2026-49472: Improper Encoding or Escaping of Output

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 includes a vulnerable function, PREFIXprologTok, in...

CVE-2026-45771: Improper Restriction of Recursive Entity References in DTDs

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 declarations without a depth or count boun...