CVE-2016-2564

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

Invision Power Services (IPS) Community Suite before 4.1.9 makes session hijack easier by relying on the PHP uniqid function without the more_entropy flag. Attackers can guess an Invision Power Board session cookie if they can predict the exact time of cookie generation.

Metrics

CVSS 3.0 5.9/10CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-331

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://invisionpower.com/release-notes/419-r37/Release Notes, Vendor Advisory
https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9
https://invisionpower.com/release-notes/419-r37/Release Notes, Vendor Advisory
https://medium.com/%40iancarroll/bypassing-authentication-in-invision-power-board-with-cve-2016-2564-9a24ea3655f9

Timeline

Published: Apr 23, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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