{"id":"CVE-2026-104070","title":"The Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, c…","summary":"The Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, c…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-862"],"vendor":"SPIP","product":"SPIP Crayons Plugin","affected":["crayons_plugin < 3.5.0"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T17:17:12.213","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104070","references":[{"url":"https://blog.spip.net/Mises-a-jour-de-securite-critique-plugins-Crayons-et-Simplog.html?lang=fr","label":"disclosure@vulncheck.com"},{"url":"https://plugins.spip.net/crayons.html?lang=fr","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/spip-crayons-plugin-authorization-bypass-rce","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T17:09:22.200Z","slug":"CVE-2026-104070","body":"## Overview\n\nThe Crayons plugin for SPIP before 3.5.0 contains a missing authorization vulnerability that allows unauthenticated attackers to modify arbitrary editable object fields by omitting the secu_ anti-forgery parameter in crayons_store.php, causing the authorization dispatcher to resolve an unconditionally-true handler instead of the proper modification check. Attackers can chain this flaw to write a malicious .html skeleton file, disclose sensitive configuration files containing the site secret, and forge a signed ajax context to execute the uploaded skeleton, achieving arbitrary PHP code execution as the web-server user.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}