CVE-2026-111653

Description

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 checks when IS_SAAS is true, attackers can enumerate sequential enterprise IDs and overwrite logos, display names and branding for defacement and phishing.

References

• https://github.com/53AI/53AIHub/blob/v0.5.3/api/controller/enterprise.go#L122-L160
• https://github.com/53AI/53AIHub/blob/v0.5.3/api/router/api.go#L54-L66
• https://hackmd.io/@hieuPenguinnn/53aihub-unauth-cross-tenant-enterprise-update
• https://www.vulncheck.com/advisories/53aihub-through-0.5.3-missing-authentication-via-put-api-enterprises-id