CVE-2026-8924

Publication date 24 June 2026

Last updated 24 September 2026

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

9.1 · Critical

Score breakdown

Description

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.

Why is this CVE low priority?

Upstream defined this as low severity

Learn more about Ubuntu priority

Status

Package Ubuntu Release Status
curl 26.10 stonking
Not affected
26.04 LTS resolute
Fixed in 8.18.0-1ubuntu2.2
25.10 questing
Fixed in 8.14.1-2ubuntu1.4
24.04 LTS noble
Fixed in 8.5.0-2ubuntu10.10
22.04 LTS jammy
Fixed in 7.81.0-1ubuntu1.25
20.04 LTS focal
Fixed in 7.68.0-1ubuntu2.25+esm4
18.04 LTS bionic
Fixed in 7.58.0-2ubuntu3.24+esm9
16.04 LTS xenial
Fixed in 7.47.0-1ubuntu2.19+esm16
14.04 LTS trusty
Not affected

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
curl

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.1 · Critical

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Related Ubuntu Security Notices (USN)

Other references

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