# CVE-2026-8429: SPIP remote code execution in private space

Source: https://junglewise.ai/threats/cve-2026-8429-spip-remote-code-execution-in-private-space  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-05-12. Updated: 2026-05-14  
License: CC BY 4.0 with a link back

CVE-2026-8429 · Severity: high · CVSS 8.8 · Published 2026-05-12

SPIP is a popular open-source content management system used to publish and manage websites. A security vulnerability in the software's administrative interface (the 'private space') allows an attacker with low-level access to execute malicious code on the server. This could lead to a complete takeover of the website, theft of sensitive data, or disruption of services, even if standard security screens are active.

Technologies: [Spip](https://junglewise.ai/threats/technologies/spip). Vendors: [Spip](https://junglewise.ai/threats/vendors/spip).

## Quick answers

**Is CVE-2026-8429 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-8429 being exploited in the wild.

**How severe is CVE-2026-8429?** High severity, with a CVSS score of 8.8, published 12 May 2026.

**Which products and versions are affected?** Spip < 4.4.14.

**Is there a fix for CVE-2026-8429?** A patch was published on 2026-05-12: Released in SPIP 4.4.14 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-8429 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-8429?** Check whether you run Spip at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A remote code execution (RCE) vulnerability exists in SPIP versions prior to 4.4.14 within the 'private space' (administrative area). The flaw is classified as CWE-94 (Improper Control of Generation of Code) and allows an attacker with low-privileged (PR:L) access to execute arbitrary PHP code in the context of the web server. Notably, the exploit bypasses the 'SPIP security screen' (écran de sécurité), a common hardening measure for the platform. The vulnerability is addressed in version 4.4.14. A separate RCE vulnerability affecting the public space in specific Nginx configurations was also patched in the same release, but this specific entry (CVE-2026-8429) focuses on the private space flaw.

## Affected products

- SPIP SPIP < 4.4.14

## Timeline

- 2026-05-12: disclosed
- 2026-05-12: patched: Released in SPIP 4.4.14
- 2026-05-12: advisory

## References

- [https://blog.spip.net/](https://blog.spip.net/)
- [https://www.vulncheck.com/advisories/spip-prior-to-remote-code-execution-via-private-space](https://www.vulncheck.com/advisories/spip-prior-to-remote-code-execution-via-private-space)

## Related threats

- [SPIP SQL injection via parameter mismatch](https://junglewise.ai/threats/cve-2026-122032-spip-before-4-4-29-contains-a-sql-injection-vulnerability-that)
- [SPIP server-side request forgery in recuperer_url()](https://junglewise.ai/threats/cve-2026-109378-spip-before-4-4-18-contains-a-server-side-request-forgery)
- [SPIP mass assignment in editer_objet leading to RCE](https://junglewise.ai/threats/cve-2026-72710-spip-mass-assignment-in-editer-objet-leading-to-rce)
- [SPIP missing authorization in sensitive actions](https://junglewise.ai/threats/cve-2026-72709-spip-missing-authorization-in-sensitive-actions)
- [SPIP unauthenticated blind SQL injection in SQL escaping](https://junglewise.ai/threats/cve-2026-72708-spip-unauthenticated-blind-sql-injection-in-sql-escaping)