CVE-2017-9066

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading...

8.6 HighFix available

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

3.67%Up 1.8 points since Apr 14, 2021

What each source reports

NVD Score used 8.6

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: CVE-2017-9066
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness: CWE-918
Updated: 2026-11-02

CVE List No score

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: CVE-2017-9066
Updated: 2026-11-02

EUVDEUVD-2017-18005 No score

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: EUVD-2017-18005
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hmqr-j9c3-8h75 8.6

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading...

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: GHSA-hmqr-j9c3-8h75
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Weakness: CWE-918
Updated: 2026-11-02

OSV 8.6

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: CVE-2017-9066
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2017-9066 8.6

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: DEBIAN-CVE-2017-9066
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2017-9066 8.6

In WordPress before 4.7.5, there is insufficient redirect validation in the HTTP class, leading to SSRF.

Record: UBUNTU-CVE-2017-9066
CVSS 3.0: 8.6 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wordpress` Debian:12	before 4.7.5+dfsg-1	4.7.5+dfsg-1
`wordpress` Debian:13	before 4.7.5+dfsg-1	4.7.5+dfsg-1
`wordpress` Debian:14	before 4.7.5+dfsg-1	4.7.5+dfsg-1
`wordpress` Debian:7	before 3.6.1+dfsg-1~deb7u16, plus listed versions 3.5.1+dfsg-23.5.2+dfsg-13.5.2+dfsg-1~deb6u13.5.2+dfsg-1~deb7u13.6+dfsg-1 Show 23 moreShow less 3.6.1+dfsg-1~deb6u13.6.1+dfsg-1~deb6u23.6.1+dfsg-1~deb6u33.6.1+dfsg-1~deb6u43.6.1+dfsg-1~deb6u53.6.1+dfsg-1~deb6u63.6.1+dfsg-1~deb6u73.6.1+dfsg-1~deb6u83.6.1+dfsg-1~deb6u93.6.1+dfsg-1~deb7u13.6.1+dfsg-1~deb7u103.6.1+dfsg-1~deb7u113.6.1+dfsg-1~deb7u123.6.1+dfsg-1~deb7u133.6.1+dfsg-1~deb7u143.6.1+dfsg-1~deb7u153.6.1+dfsg-1~deb7u23.6.1+dfsg-1~deb7u33.6.1+dfsg-1~deb7u43.6.1+dfsg-1~deb7u53.6.1+dfsg-1~deb7u63.6.1+dfsg-1~deb7u83.6.1+dfsg-1~deb7u9	3.6.1+dfsg-1~deb7u16
`wordpress` Ubuntu:16.04:LTS	All versions, plus listed versions 4.3+dfsg-14.3.1+dfsg-14.4+dfsg-14.4.1+dfsg-14.4.2+dfsg-14.4.2+dfsg-1ubuntu1	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-9066 is a high vulnerability (CVSS 8.6) in Wordpress, published May 18, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.67%, the 89th percentile. Fixed in wordpress 4.7.5+dfsg-1.

References

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