{"cve":"CVE-2020-7070","nvd":{"published":"2020-10-02T15:15:12.747","modified":"2026-06-17T03:24:18.537","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":["CWE-565","CWE-20"],"references":["http://cve.circl.lu/cve/CVE-2020-8184","http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00045.html","http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00067.html","https://bugs.php.net/bug.php?id=79699","https://hackerone.com/reports/895727"],"products":["canonical:ubuntu_linux","debian:debian_linux","fedoraproject:fedora","netapp:clustered_data_ontap","opensuse:leap","php:php","tenable:tenable.sc"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-7070","score":0.05029,"percentile":0.92267,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}