CVE-2026-121880
2026-11-06
16h17 +00:00
16h17 +00:00
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掌握特定 CVE 的任何變更。
CVE 描述
Authorization bypass through user-controlled key in the localhost port-proxy (/p//) in Posit Software, PBC RStudio Server and Posit Workbench before 2026.08.0 allows remote authenticated users to reach web applications and other services bound to 127.0.0.1 under a different user's session, and to view their live rendered content and data, via a proxy URL constructed from the attacker's own port token for an arbitrary port number. The port token is a documented obfuscation measure and not an authorization boundary, and the proxy does not verify that the requested port belongs to the requesting user's session.
NOTE: exploitation requires an authenticated account on the same multi-user server and a target service listening on localhost at the time of access. Impact may be greater on hosts that co-locate additional privileged localhost services, and the bypass is not prevented by allow-shell=false; no setting restricts the port-proxy without disabling all application proxying.
CVE 資訊
相關弱點
| 弱點名稱 | 來源 | |
|---|---|---|
| Authorization Bypass Through User-Controlled Key The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. |
||
| Missing Authorization The product does not perform an authorization check when an actor attempts to access a resource or perform an action. |
