Vulnerability · Published Feb 25, 2026 · Assigned by VulnCheck

CVE-2026-27744SPIP tickets < 4.3.3 Unauthenticated RCE

Critical 9.8

In plain English

A critical-severity code injection in tickets from SPIP. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 64% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)1.0%top 36.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
SPIP	tickets	0 – before 4.3.3

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://chocapikk.com/posts/2026/spip-plugins-vulnerabilities/ technical-description, exploit
https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html vendor-advisory
https://plugins.spip.net/tickets product
https://git.spip.net/spip-contrib-extensions/tickets/-/commit/869935b6687822ed79ad5477626a664d8ea6dcf7 patch
https://www.vulncheck.com/advisories/spip-tickets-unauthenticated-rce third-party-advisory