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 Details
- CVSS 3.1 Base Score: 9.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Jul 6, 2026 | Jul 3, 2026 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory11 | Jul 28, 2026 | Jul 28, 2026 |
| Redhat_linux | — | Upgrade curl-debugsourceUpgrade curlUpgrade libcurl-minimalUpgrade libcurl-develUpgrade libcurl-minimal-debuginfoUpgrade libcurlUpgrade curl-debuginfoNo solution existsUpgrade libcurl-debuginfo | Jul 17, 2026 | Jul 3, 2026 |
| Rocky_linux | — | Upgrade curl-debuginfoUpgrade libcurl-debuginfoUpgrade libcurl-develUpgrade libcurl-minimal-debuginfoUpgrade curlUpgrade curl-debugsourceUpgrade libcurlUpgrade libcurl-minimal | Sep 28, 2026 | Sep 22, 2026 |
| Ubuntu | — | Upgrade libcurl4-gnutls-devUpgrade libcurl4-openssl-dev (Ubuntu Pro)Upgrade libcurl4-gnutls-dev (Ubuntu Pro)Upgrade libcurl4-openssl-devUpgrade libcurl4-nss-devUpgrade libcurl3-gnutlsUpgrade libcurl3 (Ubuntu Pro)Upgrade libcurl4t64Upgrade libcurl4-nss-dev (Ubuntu Pro)Upgrade libcurl3-nssUpgrade curlUpgrade curl (Ubuntu Pro)Upgrade libcurl3t64-gnutlsUpgrade libcurl4 (Ubuntu Pro)Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl4 | Jul 1, 2026 | Jun 30, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 10, 2026 | Jul 3, 2026 |
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