CVE-2026-92390 Affecting curl package, versions <8.18.0-1ubuntu2.8


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.59% (49th percentile)

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  • Snyk IDSNYK-UBUNTU2604-CURL-20937930
  • published14 Oct 2026
  • disclosed20 Oct 2026

Introduced: 14 Oct 2026

NewCVE-2026-92390  (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.

When invoked with --remote-header-name (-J), curl fails to preserve its documented anti-clobbering protection if an intermediate 103 Early Hints response precedes the final HTTP response, or if an ETag header is processed before Content-Disposition under --etag-save. This flaw allows an HTTP(S) server to overwrite an existing local file specified in the Content-Disposition header despite the presence of the -J non-overwrite constraint.

CVSS Base Scores

version 3.1