CVE-2026-49841

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Source
https://cve.org/CVERecord?id=CVE-2026-49841
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-49841.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-49841
Aliases
  • GHSA-wfrq-qvg2-f88f
Published
2026-06-09T16:02:24Z
Modified
2026-10-28T02:30:23Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
FreeSWITCH: Pre-authentication heap buffer overflow in `mod_verto` HTTP POST body read
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, the mod_verto HTTP request handler allocates a fixed 2 MiB buffer for a POST application/x-www-form-urlencoded body but accepts Content-Length up to just under 10 MiB. The body-read loop is bounded by Content-Length rather than the buffer size, producing an attacker-controlled heap overflow of up to ~8 MiB -- before the HTTP basic-auth check runs. This issue has been patched in version 1.11.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-122",
        "CWE-131"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49841.json"
}
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
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.11.1"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "original_tag": "v1.11.1",
            "range": [
                {
                    "fixed": "c2c59645f6911a76589e5008c4d73349ded44b65"
                }
            ],
            "source": "REFERENCES_TAG"
        },
        {
            "cpe": "cpe:2.3:a:freeswitch:freeswitch:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "1.11.1"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

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-2026-49841.json"