CVE-2026-72709 json
SPIP < 4.4.18 Missing Authorization via ecrire/action/
published 2026-09-11 58 d ago modified 2026-10-01 38 d ago also EUVD-2026-76155
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- SPIP SPIP 4.4.18
- spip Debian 13 4.4.19+dfsg-0+deb13u1
- spip Debian 14 4.4.18+dfsg-1
debian advisories DEBIAN-CVE-2026-72709
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 58 d ago
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blog.lexfo.fr https://blog.lexfo.fr/casse-spip-sqli-to-rce.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- SPIP SPIP
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
blog.spip.net
/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html
release-notes, patch
-
blog.lexfo.fr
/casse-spip-sqli-to-rce.html
technical-description, exploit
-
vulncheck.com
/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur
third-party-advisory
Sources
- CVE List CVE-2026-72709
- NVD CVE-2026-72709
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