Vulnerability details
CVE-2026-72709
SPIP SPIP
SPIP < 4.4.18 Missing Authorization via ecrire/action/
CVSS 4.0
9.3Critical
Official description
SPIP before version 4.4.18 contains a missing authorization vulnerability in sensitive actions under ecrire/action/ that allows unauthenticated attackers to invoke privileged actions by supplying only a valid CSRF nonce without any server-side permission check. Attackers can bypass template-level authorization guards through direct HTTP requests to invoke actions such as editer_auteur, enabling arbitrary account password rewrites including administrator accounts and resulting in full account takeover.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| 9.8Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| SPIP | SPIP | v < 4.4.18 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://blog.lexfo.fr/casse-spip-sqli-to-rce.html technical-descriptionexploit
- https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html release-notespatch
- https://www.vulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur third-party-advisory
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Details
- Published
- 2026-09-11
- Last updated
- 2026-10-01
- State
- Published
- Assigner (CNA)
- VulnCheck
Exploit prediction (EPSS)
0.65%
Probability of exploitation in 30 days
51.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-862Missing Authorization