The SPIP tickets plugin versions prior to 4.3.3 contain an unauthenticated remote code execution vulnerability in the forum preview handling for public ticket pages. The plugin appends untrusted request parameters into HTML that is later rendered by a template using unfiltered environment rendering (#ENV**), which disables SPIP output filtering. As a result, an unauthenticated attacker can inject crafted content that is evaluated through SPIP's template processing chain, leading to execution of code in the context of the web server.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/
disclosure@vulncheck.com
https://git.spip.net/spip-contrib-extensions/tickets/-/commit/869935b6687822ed7…
disclosure@vulncheck.com
https://plugins.spip.net/tickets
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/spip-tickets-unauthenticated-rce
disclosure@vulncheck.com