CVE-2026-111653

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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
https://hackmd.io/@hieuPenguinnn/53aihub-unauth-cross-tenant-enterprise-update

Configurations

No configuration.

History

23 Oct 2026, 17:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@hieuPenguinnn/53aihub-unauth-cross-tenant-enterprise-update -~~	() https://hackmd.io/@hieuPenguinnn/53aihub-unauth-cross-tenant-enterprise-update -

16 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 18:17

Updated : 2026-10-23 17:17

NVD link : CVE-2026-111653

Mitre link : CVE-2026-111653

CVE.ORG link : CVE-2026-111653

JSON object : View

Products Affected

No product.

CWE

CWE-306

Missing Authentication for Critical Function

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