CVE-2016-5420

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

curl and libcurl before 7.50.1 do not check the client certificate when choosing the TLS connection to reuse, which might allow remote attackers to hijack the authentication of the connection by leveraging a previously created connection with a different client certificate.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Aug 10, 2016
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2016

CVE-2016-54218.1Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified otheCVE-2016-54228.8The web console in Red Hat JBoss Operations Network (JON) before 3.3.7 does not properly authorize requests to add users with the super userCVE-2016-54238.3PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 allow remote authenticated usCVE-2016-54247.1PostgreSQL before 9.1.23, 9.2.x before 9.2.18, 9.3.x before 9.3.14, 9.4.x before 9.4.9, and 9.5.x before 9.5.4 might allow remote authenticaCVE-2016-54257.8The Tomcat package on Red Hat Enterprise Linux (RHEL) 7, Fedora, CentOS, Oracle Linux, and possibly other Linux distributions uses weak permCVE-2016-54267.5PowerDNS (aka pdns) Authoritative Server before 3.4.10 allows remote attackers to cause a denial of service (backend CPU consumption) via a CVE-2016-54277.5PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to caCVE-2016-54293.7jose-php before 2.2.1 does not use constant-time operations for HMAC comparison, which makes it easier for remote attackers to obtain sensitCVE-2016-54305.3The RSA 1.5 algorithm implementation in the JOSE_JWE class in JWE.php in jose-php before 2.2.1 lacks the Random Filling protection mechanismCVE-2016-54317.5The PHP JOSE Library by Gree Inc. before version 2.2.1 is vulnerable to key confusion/algorithm substitution in the JWS component resulting CVE-2016-54323.3The ovirt-engine-provisiondb utility in Red Hat Enterprise Virtualization (RHEV) Engine 4.0 allows local users to obtain sensitive database CVE-2016-54336.1Citrix iOS Receiver before 7.0 allows attackers to cause TLS certificates to be incorrectly validated via unspecified vectors.
CVE-2016-5420: High severity, CVSS 7.5 | Vulnix