---
title: "CVE-2026-72709: SPIP - Broken Access Control"
description: "SPIP < 4.4.18 contains a missing authorization vulnerability in administrative action endpoints under ecrire/action/ caused by lack of server-side permission checks via autoriser(), letting unauthenticated attackers perform privileged actions including password resets by supplying a valid HMAC-SHA256 nonce."
url: https://panop.io/threat-heartbeat/CVE-2026-72709/
---

# CVE-2026-72709 SPIP - Broken Access Control

SPIP < 4.4.18 contains a missing authorization vulnerability in administrative action endpoints under ecrire/action/ caused by lack of server-side permission checks via autoriser(), letting unauthenticated attackers perform privileged actions including password resets by supplying a valid HMAC-SHA256 nonce.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.66% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-72709)

## Details

Type

Broken Access Control

Impact

Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

11 September 2026

Updated

15 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Update to version 4.4.18 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-72709](https://nvd.nist.gov/vuln/detail/CVE-2026-72709)
- [https://www.vulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur](https://www.vulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur)
- [https://blog.lexfo.fr/casse-spip-sqli-to-rce.html](https://blog.lexfo.fr/casse-spip-sqli-to-rce.html)
- [https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html](https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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