CVE-2026-49847

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Source
https://cve.org/CVERecord?id=CVE-2026-49847
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49847.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49847
Aliases
  • GHSA-2v74-pcgh-75wg
Published
2026-06-09T16:05:08.869Z
Modified
2026-07-15T01:49:22.287388292Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
FreeSWITCH: Stack overflow in bundled cJSON parser via deeply nested JSON
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 1.11.1, 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 kernel before any usable write primitive develops. This issue has been patched in version 1.11.1.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49847.json",
    "cwe_ids": [
        "CWE-674"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/signalwire/freeswitch

Affected ranges

Type
GIT
Repo
https://github.com/signalwire/freeswitch
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c2c59645f6911a76589e5008c4d73349ded44b65
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.11.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*"
}

Affected versions

Other
git2svn-syncpoint-master
v.*
v.1.3.12
v.15.9
v0.*
v0.0.1
v1.*
v1.10.0
v1.10.1
v1.10.10
v1.10.11
v1.10.12
v1.10.2
v1.10.3
v1.10.4
v1.10.5
v1.10.6
v1.10.7
v1.10.8
v1.10.9
v1.11.0
v1.2-rc1
v1.2-rc2
v1.3.0
v1.3.1
v1.3.10
v1.3.11
v1.3.12
v1.3.13
v1.3.14
v1.3.15
v1.3.16
v1.3.17-final
v1.3.2
v1.3.3
v1.3.4
v1.3.5
v1.3.6
v1.3.7
v1.3.8
v1.3.9
v1.5.0
v1.5.1
v1.5.10
v1.5.12
v1.5.13
v1.5.14
v1.5.2
v1.5.5
v1.5.8
v1.5.final
v1.6.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49847.json"