CVE-2026-72709 PUBLISHED

SPIP < 4.4.18 Missing Authorization via ecrire/action/ editer_auteur

Assigner: VulnCheck
Reserved: 10.08.2026 Published: 11.09.2026 Updated: 11.09.2026

SPIP before 4.4.18 contains a missing authorization vulnerability in the administrative action endpoints under ecrire/action/ that allows unauthenticated attackers to perform privileged actions by supplying a valid HMAC-SHA256 nonce without any server-side permission check via autoriser(). Attackers can obtain a valid nonce, compute it for any action as the anonymous user, and invoke the editer_auteur action directly over HTTP to reset the password of any user account, including the administrator.

Metrics

CVSS Vector: 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
CVSS Score: 9.3

Product Status

Vendor SPIP
Product SPIP
Versions Default: unaffected
  • affected from 0 to 4.4.18 (excl.)

Credits

  • Franck Chevalier finder
  • Wayko finder

References

Problem Types

  • Missing Authorization CWE