🛡️ CVE-2023-27538
🟡 CVSS 5.5 — Medium ⚠️ Exploit Public CWE-305 NVD
5.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection.

Details

Severity MEDIUM
CVSS Score 5.5
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE CWE-305
Public Exploit ⚠️ Yes
Source NVD
Published 2023-03-30
Updated 2026-06-08
Modified 2025-06-09
Fix URL N/A

Affected Packages

Software From version Fixed in
active-iq-unified-manager
brocade-fabric-operating-system-firmware
clustered-data-ontap
debian-linux
fedora
h300s-firmware
h410s-firmware
h500s-firmware
h700s-firmware
libcurl 7.16.1 8.0.0
universal-forwarder

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