RCE in Spip Tickets
CVE-2026-27744
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (70.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.014 · change: +0.004
Affected products
- Spip Tickets — versions 0
Weakness classification (CWE)
References
- chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ (technical-description, Third Party Advisory, exploit)
- blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html (vendor-advisory, Release Notes)
- plugins.spip.net/tickets (Product, product)
- git.spip.net/spip-contrib-extensions/tickets/-/commit/869935b6687822ed79ad54776… (Patch, patch)
- www.vulncheck.com/advisories/spip-tickets-unauthenticated-rce (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-27744?
- CVE-2026-27744 is a critical-severity vulnerability in Spip Tickets, classified under Code Injection. CVSS score: 9.8/10. Published 2026-02-25.
- How severe is CVE-2026-27744?
- Critical severity. CVSS v3 base score is 9.8 out of 10.