CVE-2016-3739

· N/AModified

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CVSS v3.1

N/A

EPSS

6.38%

Published

May 20, 2016

Modified

May 6, 2026

Public PoC / Exploit (1)

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Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

Description

The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary valid certificate.

Weaknesses (CWE)

CWE-20

Affected Products (37)

haxx · curlvulnerable

haxx · curl

References (20)

http://www.openwall.com/lists/oss-security/2024/03/27/4

http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html

http://www.securityfocus.com/bid/90726

http://www.securitytracker.com/id/1035907

http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.495349

https://curl.haxx.se/CVE-2016-3739.patch

Vendor Advisory

https://curl.haxx.se/changes.html#7_49_0

https://curl.haxx.se/docs/adv_20160518.html

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