CVE-2026-111653
53AIHub through 0.5.3 Missing Authentication via PUT /api/enterprises/:id
- State
- Published
- Severity
- 6.9 Medium
- Published
- Oct 16, 2026
- Updated
- Oct 23, 2026
- Reserved
- Oct 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-306 Missing Authentication for Critical Function
Affected Products
| Product | Versions |
|---|---|
53AIHub53AI |
|
References
- https://hackmd.io/@hieuPenguinnn/53aihub-unauth-cross-tenant-enterprise-updatethird-party-advisory
- https://github.com/53AI/53AIHub/blob/v0.5.3/api/router/api.go#L54-L66technical-description
- https://github.com/53AI/53AIHub/blob/v0.5.3/api/controller/enterprise.go#L122-L160technical-description
- VulnCheck Advisory: 53AIHub through 0.5.3 Missing Authentication via PUT /api/enterprises/:idthird-party-advisory
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