CVE-2026-8430: SPIP < 4.4.14 Remote Code Execution via nginx

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-12 · updated 2026-06-17
Weakness: CWE-94

Description

SPIP versions prior to 4.4.14 contain a remote code execution vulnerability in the public space that is limited to certain nginx configurations, allowing attackers to execute arbitrary code in the context of the web server. Attackers can exploit this vulnerability through specific nginx configuration scenarios to achieve code execution, and this issue is not mitigated by the SPIP security screen.

Affected products

SPIP: before 4.4.14 — fixed in 4.4.14

How to fix

Upgrade to a fixed version: SPIP 4.4.14. Check the vendor advisory for mitigations.

References

https://blog.spip.net/
https://www.vulncheck.com/advisories/spip-prior-to-remote-code-execution-via-nginx

Get alerted when CVE-2026-8430 or the next vulnerability affects your stack