Exposure of Data Element to Wrong Session Affecting curl package, versions <0:8.23.0-0.1.hum1


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.43% (38th percentile)

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  • Snyk IDSNYK-RHEL10-CURL-21149554
  • published17 Oct 2026
  • disclosed14 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-86411  (opens in a new tab)
CWE-488  (opens in a new tab)

How to fix?

Upgrade RHEL:10 curl to version 0:8.23.0-0.1.hum1 or higher.
This issue was patched in RHSA-2026:82895.

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.

An ftp:// transfer configured with CURLUSESSL_NONE can reuse a pooled FTP control connection that a previous easy handle upgraded with STARTTLS and authenticated using a client certificate. The second handle performs neither a new TLS handshake nor a new FTP login, so the server continues to authorize it under the first handle's certificate identity.

CVSS Base Scores

version 3.1