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FreeSWITCH input validation vulnerability

🗓️ 09 Jun 2026 00:00:00Reported by China National Vulnerability Database of Information SecurityType 
cnnvd
 cnnvd
🔗 www.cnnvd.org.cn👁 42 Views

FreeSWITCH input validation flaw before version 1.11.1 caused negative Content-Length to trigger crashes before authentication.

Related
Refs
ReporterTitlePublishedViews
Family
alpinelinux
AlpineLinux
CVE-2026-49840
9 Jun 202616:00
–alpinelinux
circl
Circl
CVE-2026-49840
10 Jun 202616:37
–circl
cve
CVE
CVE-2026-49840
9 Jun 202616:00
–cve
cvelist
Cvelist
CVE-2026-49840 FreeSWITCH: Pre-authentication heap buffer overflow in libesl `Content-Length` parsing
9 Jun 202616:00
–cvelist
euvd
EUVD
EUVD-2026-35471
9 Jun 202616:00
–euvd
mend
Mend
CVE-2026-49840
9 Jun 202616:00
–mend
nvd
NVD
CVE-2026-49840
9 Jun 202617:17
–nvd
ptsecurity
Positive Technologies
PT-2026-47847
9 Jun 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-49840: Improper Input Validation
9 Jun 202600:00
–rapid7
redhatcve
RedhatCVE
CVE-2026-49840
10 Jun 202621:02
–redhatcve
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16 Sep 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 3.19.1
EPSS0.00485
SSVC
42