{"id":"CVE-2026-111653","title":"53AIHub through 0.5.3 Missing Authentication via PUT /api/enterprises/:id","summary":"53AIHub through 0.5.3 contains a missing authentication vulnerability that allows unauthenticated attackers to overwrite any enterprise's profile by sending PUT requests to /api/enterprises/:id. Because UpdateEnterprise only enforces che…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-306"],"vendor":"53AI","product":"53AIHub","affected":["53AIHub <= 0.5.3"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:39:20.030Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111653","references":[{"url":"https://hackmd.io/@hieuPenguinnn/53aihub-unauth-cross-tenant-enterprise-update"},{"url":"https://github.com/53AI/53AIHub/blob/v0.5.3/api/router/api.go#L54-L66"},{"url":"https://github.com/53AI/53AIHub/blob/v0.5.3/api/controller/enterprise.go#L122-L160"},{"url":"https://www.vulncheck.com/advisories/53aihub-through-0.5.3-missing-authentication-via-put-api-enterprises-id","label":"VulnCheck Advisory: 53AIHub through 0.5.3 Missing Authentication via PUT /api/enterprises/:id"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T18:43:08.676Z","slug":"CVE-2026-111653","body":"## Overview\n\n53AIHub through 0.5.3 contains a missing authentication vulnerability that allows unauthenticated attackers to overwrite any enterprise's profile by sending PUT requests to /api/enterprises/:id. Because UpdateEnterprise only enforces checks when IS_SAAS is true, attackers can enumerate sequential enterprise IDs and overwrite logos, display names and branding for defacement and phishing.\n\n## Affected\n\n- `53AIHub <= 0.5.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}