CVE Explorer

CVE-2026-49847

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 the FreeSWITCH process via stack overflow, terminating all calls and sessions on the host. The recursion drives the worker thread's stack pointer into the stack guard page, raising SIGSEGV from the kern

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:df8840d226d46141ea53dc54dd9645fd7ed7515a62932761d197558af2d01b3c

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"freeswitch","vendor":"signalwire","versions":[{"status":"affected","version":"< 1.11.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b808301573547f11a7dded4e4d1dd637f6fc16694df5901ba77c7408f9bafb65 · sha256:5c35b08ad806f962… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b808301573547f11a7dded4e4d1dd637f6fc16694df5901ba77c7408f9bafb65 · sha256:5c35b08ad806f962… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-674","description":"CWE-674: Uncontrolled Recursion","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:b808301573547f11a7dded4e4d1dd637f6fc16694df5901ba77c7408f9bafb65 · sha256:5c35b08ad806f962… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.1","tags":["x_refsource_MISC"],"url":"https://github.com/signalwire/freeswitch/releases/tag/v1.11.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b808301573547f11a7dded4e4d1dd637f6fc16694df5901ba77c7408f9bafb65 · sha256:5c35b08ad806f962… · /containers/cna/references/1

{"name":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-2v74-pcgh-75wg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/signalwire/freeswitch/security/advisories/GHSA-2v74-pcgh-75wg"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b808301573547f11a7dded4e4d1dd637f6fc16694df5901ba77c7408f9bafb65 · sha256:5c35b08ad806f962… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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