CVE-2026-92387 Affecting curl package, versions <8.18.0-1ubuntu2.8


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.04% (65th percentile)

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  • Snyk IDSNYK-UBUNTU2604-CURL-20937862
  • published14 Oct 2026
  • disclosed20 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-92387  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 curl to version 8.18.0-1ubuntu2.8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

By permanently omitting the final control-response line, a malicious FTP, IMAP, POP3, or SMTP server can exploit libcurl and completely bypass its configured transfer timeout mechanism, indefinitely blocking all concurrent transfers bound to the same multi-handle.

CVSS Base Scores

version 3.1