HOME VULNERABILITIESCVE-2020-7070

MEDIUM

CVE-2020-7070

CWE-20Published: October 2, 2020· Updated: Jun 17, 2026

5.3

CVSS v3.1

Official 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.

Technical Analysis

CVE-2020-7070 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Affected Vendors & Products

Canonical1 product(s)

ubuntu linux

Debian1 product(s)

debian linux

Fedora1 product(s)

fedora

netapp1 product(s)

clustered data ontap

openSUSE1 product(s)

leap

PHP1 product(s)

php

tenable1 product(s)

tenable.sc

Source: NVD CPE · 15 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://cve.circl.lu/cve/CVE-2020-8184

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00045.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00067.html

ADVISORYhttps://bugs.php.net/bug.php?id=79699

ADVISORYhttps://hackerone.com/reports/895727

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/10/msg00008.html

ADVISORYhttps://security.gentoo.org/glsa/202012-16

ADVISORYhttps://security.netapp.com/advisory/ntap-20201016-0001/

ADVISORYhttps://usn.ubuntu.com/4583-1/

ADVISORYhttps://www.debian.org/security/2021/dsa-4856

ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2021.html

ADVISORYhttps://www.tenable.com/security/tns-2021-14

ADVISORYhttp://cve.circl.lu/cve/CVE-2020-8184

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00045.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00067.html

ADVISORYhttps://bugs.php.net/bug.php?id=79699

ADVISORYhttps://hackerone.com/reports/895727

ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/10/msg00008.html

ADVISORYhttps://security.gentoo.org/glsa/202012-16

ADVISORYhttps://security.netapp.com/advisory/ntap-20201016-0001/

ADVISORYhttps://usn.ubuntu.com/4583-1/

ADVISORYhttps://www.debian.org/security/2021/dsa-4856

ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2021.html

ADVISORYhttps://www.tenable.com/security/tns-2021-14

All References (30)

→

http://cve.circl.lu/cve/CVE-2020-8184Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00045.htmlMailing List · Third Party Advisory

→

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00067.htmlMailing List · Third Party Advisory

→

https://bugs.php.net/bug.php?id=79699Issue Tracking · Vendor Advisory

→

https://hackerone.com/reports/895727Exploit · Third Party Advisory

→

https://lists.debian.org/debian-lts-announce/2020/10/msg00008.htmlMailing List · Third Party Advisory

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EVDN7D3IB4EAI4D3ZOM2OJKQ5SD7K4E/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2J3ZZDHCSX65T5QWV4AHBN7MOJXBEKG/

→

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRU57N3OSYZPOMFWPRDNVH7EMYOTSZ66/

→

https://security.gentoo.org/glsa/202012-16Third Party Advisory

→

https://security.netapp.com/advisory/ntap-20201016-0001/Third Party Advisory

→

https://usn.ubuntu.com/4583-1/Third Party Advisory

→

https://www.debian.org/security/2021/dsa-4856Third Party Advisory

→

https://www.oracle.com/security-alerts/cpuoct2021.htmlNot Applicable · Third Party Advisory

→

https://www.tenable.com/security/tns-2021-14Third Party Advisory

Quick Facts

CVE IDCVE-2020-7070

CVSS Score5.3 / 10

SeverityMEDIUM

WeaknessCWE-20

CISA KEVNo

Affected7 vendor(s)

PublishedOct 2, 2020

Related CVEs (CWE-20)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2020-7070 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.

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