VULNERABILITY INTELLIGENCE

CVE-2026-8924

CVSS score9.1 CRITICAL

EPSS probability0.66%

CISA KEVNot currently listed

Published2026-07-03

Last modified2026-09-15

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

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.

Weakness classification

CWE-201: Insertion of Sensitive Information Into Sent Data

Primary references

2499f714-1537-4658-8207-48ae4bb9eae9 — Patch, Vendor Advisory
2499f714-1537-4658-8207-48ae4bb9eae9 — Vendor Advisory
2499f714-1537-4658-8207-48ae4bb9eae9 — Exploit, Issue Tracking, Third Party Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Issue Tracking, Third Party Advisory