CVE-2015-8562

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 98.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2015-12-16 · updated 2026-06-17
Weakness: CWE-20

Description

Joomla! 1.5.x, 2.x, and 3.x before 3.4.6 allow remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via the HTTP User-Agent header, as exploited in the wild in December 2015.

Affected products

Joomla!: 1.5.0, 1.5.1, 1.5.2, 1.5.3, 1.5.4, 1.5.6 (+89)

References

http://packetstormsecurity.com/files/134949/Joomla-HTTP-Header-Unauthenticated-Remote-Code-Execution.html
http://packetstormsecurity.com/files/135100/Joomla-3.4.5-Object-Injection.html
http://www.rapid7.com/db/modules/exploit/multi/http/joomla_http_header_rce
http://www.securityfocus.com/archive/1/537219/100/0/threaded
http://www.securityfocus.com/bid/79195
https://blog.sucuri.net/2015/12/remote-command-execution-vulnerability-in-joomla.html
https://developer.joomla.org/security-centre/630-20151214-core-remote-code-execution-vulnerability.html
https://www.exploit-db.com/exploits/38977/
https://www.exploit-db.com/exploits/39033/
http://packetstormsecurity.com/files/134949/Joomla-HTTP-Header-Unauthenticated-Remote-Code-Execution.html
http://packetstormsecurity.com/files/135100/Joomla-3.4.5-Object-Injection.html
http://www.rapid7.com/db/modules/exploit/multi/http/joomla_http_header_rce

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