CVE-2026-8924 Affecting curl package, versions <8.18.0-1ubuntu2.2


Severity

Recommended
low

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.56% (44th percentile)

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  • Snyk IDSNYK-UBUNTU2604-CURL-17486907
  • published25 Jun 2026
  • disclosed3 Jul 2026

Introduced: 25 Jun 2026

CVE-2026-8924  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 curl to version 8.18.0-1ubuntu2.2 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.

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set 'super cookies' that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains.

CVSS Base Scores

version 3.1