CVE-2026-80255 Affecting curl package, versions <8.22.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.48% (39th percentile)

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  • Snyk IDSNYK-ALPINE323-CURL-19533352
  • published5 Sept 2026
  • disclosed6 Sept 2026

Introduced: 5 Sep 2026

CVE-2026-80255  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 curl to version 8.22.0-r0 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 Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

A Set-Cookie: header using tab (horizontal tab, ASCII code 9) instead of space (ascii code 32) immediately before the Secure attribute causes curl to store the cookie without its Secure flag. The cookie might then wrongfully be sent over plaintext HTTP on subsequent requests to the same host.

CVSS Base Scores

version 3.1