CVE-2016-4309

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-06-30 · updated 2026-06-17
Weakness: CWE-362

Description

Session fixation vulnerability in Symphony CMS 2.6.7, when session.use_only_cookies is disabled, allows remote attackers to hijack web sessions via the PHPSESSID parameter.

Affected products

Getsymphony Symphony: 2.6.7

References

http://hyp3rlinx.altervista.org/advisories/SYMPHONY-CMS-SESSION-FIXATION.txt
http://packetstormsecurity.com/files/137551/Symphony-CMS-2.6.7-Session-Fixation.html
http://www.securityfocus.com/archive/1/538714/100/0/threaded
http://www.securityfocus.com/bid/91299
https://github.com/symphonycms/symphony-2/commit/b329a14adc40868965076a77210452e396243dcd
https://www.exploit-db.com/exploits/39983/
http://hyp3rlinx.altervista.org/advisories/SYMPHONY-CMS-SESSION-FIXATION.txt
http://packetstormsecurity.com/files/137551/Symphony-CMS-2.6.7-Session-Fixation.html
http://www.securityfocus.com/archive/1/538714/100/0/threaded
http://www.securityfocus.com/bid/91299
https://github.com/symphonycms/symphony-2/commit/b329a14adc40868965076a77210452e396243dcd
https://www.exploit-db.com/exploits/39983/

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