CVE-2020-7070: Canonical Ubuntu Linux

Medium severity, CVSS 5.3. EPSS: 5% chance of exploitation in the next 30 days.

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 18.04 only; version 20.04 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 31 only; version 32 only; version 33 only
• Netapp Clustered Data Ontap: affected versions not specified
• Opensuse Leap: version 15.1 only; version 15.2 only
• PHP PHP: from 7.2.0, before 7.2.34 (fixed in 7.2.34); from 7.3.0, before 7.3.23 (fixed in 7.3.23); from 7.4.0, before 7.4.11 (fixed in 7.4.11)
• Tenable Tenable.sc: before 5.19.0 (fixed in 5.19.0)

Published 2020-10-02. Last modified 2026-06-17.