Improper Certificate Validation Affecting curl package, versions <0:8.21.0-0.1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.36% (29th percentile)

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  • Snyk IDSNYK-RHEL10-CURL-17899681
  • published9 Jul 2026
  • disclosed3 Jul 2026

Introduced: 3 Jul 2026

CVE-2026-11564  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade RHEL:10 curl to version 0:8.21.0-0.1.hum1 or higher.
This issue was patched in RHSA-2026:29017.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup.

An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same handle to custom CA material for a later transfer.

CVSS Base Scores

version 3.1