by Kastro
Paper/Archive/CVE-2026-72709

CVE-2026-72709

SPIP SPIP — SPIP < 4.4.18 Missing Authorization via ecrire/action/

EPSS 0.7%public exploitCVSS 9.8
critical.is priorityof 100
50
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 51.4.514 × 2010.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
SPIP< 4.4.184.4.18CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploitblog.lexfo.fr/casse-spip-sqli-to-rce.htmlpatchblog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.htmlwriteupvulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur