CVE-2026-110611: Authorization Bypass Through User-Controlled Key in getrebuild rebuild
Description
CVE-2026-110611 is an authorization bypass vulnerability in the getrebuild product 'rebuild' through version 4.5.0. It affects AiBot2Controller endpoints that use a caller-supplied chatid without verifying ownership. Authenticated low-privilege users can exploit this to access or manipulate other users' AI assistant conversations.
CVSS v4.0
Score 6.0medium
Affected software
getrebuild
rebuild
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in getrebuild's 'rebuild' product (up to version 4.5.0) allows authenticated users with low privileges to bypass authorization controls in AiBot2Controller endpoints (/aibot2). These endpoints accept a chatid parameter from the caller but do not verify whether the caller owns the chatid. This flaw enables attackers to read, delete, exfiltrate, or interrupt AI assistant conversations belonging to other users by supplying their chatid to chat-init, chat-delete, chat-feedback, or chat-stream-stop operations.
Potential Impact
An attacker with low-level authentication can access or manipulate other users' AI assistant conversations, potentially leading to unauthorized data disclosure, deletion, or disruption of service. The vulnerability does not require elevated privileges or user interaction beyond authentication, increasing the risk of misuse within the affected environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to AiBot2Controller endpoints to trusted users only and monitor for unusual activity involving chatid parameters. Avoid exposing these endpoints to untrusted networks or users.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-14T13:07:23.861Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acf92eb2cdf04f6568a382e
Added to database: 10/14/2026, 14:34:19 UTC
Last enriched: 10/14/2026, 15:04:35 UTC
Last updated: 10/14/2026, 19:00:33 UTC
Views: 10
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