PT-2026-51746 · Curl+3 · Libcurl+3

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CVE-2026-8458

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Published

2026-06-24

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Updated

2026-08-26

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Name of the Vulnerable Software and Affected Versions libcurl (affected versions not specified)
Description A logical error in the connection pooling mechanism allows the software to reuse an incorrect connection for Negotiate-authenticated requests. This occurs even when the requests are configured to use different services, potentially leading to a request being sent over a connection authenticated for a different service on the same server.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

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Weakness Enumeration

Related Identifiers

AZL-91809
AZL-91824
CVE-2026-8458
ECHO-428D-D3D6-1CC8
JLSEC-2026-1212
OPENSUSE-SU-2026:11230-1
OPENSUSE-SU-2026:21272-1
RHSA-2026:34975
SUSE-SU-2026:22553-1
SUSE-SU-2026:22582-1
SUSE-SU-2026:22709-1
SUSE-SU-2026:22889-1
SUSE-SU-2026:2925-1
SUSE-SU-2026:2926-1
SUSE-SU-2026:3043-1
SUSE-SU-2026:3814-1
USN-8487-1

Affected Products

Ibm Aix
Linuxmint
Ubuntu
Libcurl