PT-2016-7522 · Curl+3 · Curl+3

Andrej Nemec

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Published

2016-11-02

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Updated

2026-05-18

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CVE-2016-8616

CVSS v3.1

5.9

Medium

VectorAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Name of the Vulnerable Software and Affected Versions curl versions prior to 7.51.0
Description A flaw was found in curl where it performed case-insensitive comparisons of username and password with existing connections when reusing a connection. This allows an attacker to reuse an existing connection with proper credentials for a protocol that has connection-scoped credentials, if they know the case-insensitive version of the correct password.
Recommendations For versions prior to 7.51.0, update to version 7.51.0 or later to resolve the issue. As a temporary workaround, consider restricting the reuse of connections to minimize the risk of exploitation.

Fix

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Weakness Enumeration

Related Identifiers

ALT-PU-2016-2231
CLEANSTART-2026-AY18527
CLEANSTART-2026-BW46578
CLEANSTART-2026-DI23929
CLEANSTART-2026-LQ42192
CLEANSTART-2026-OF85770
CVE-2016-8616
DLA-711-1
DSA-3705-1
MGASA-2018-0053
OPENSUSE-SU-2016_2768-1
OPENSUSE-SU-2024:10303-1
RHSA-2018:3558
SUSE-SU-2016:2699-1
SUSE-SU-2016:2700-1
SUSE-SU-2016:2714-1
SUSE-SU-2017:2699-1
SUSE-SU-2017:2700-1
USN-3123-1

Affected Products

Alt Linux
Suse
Ubuntu
Curl