Description
A security flaw has been discovered in lmsys sglang 0.4.6. Affected by this vulnerability is the function main of the file /update_weights_from_tensor. The manipulation of the argument serialized_named_tensors results in deserialization. The attack can be launched remotely. The exploit has been released to the public and may be exploited. The vendor was contacted early about this disclosure but did not respond in any way.
In lmsys sglang 0.4.6 ist eine Schwachstelle entdeckt worden. Dabei geht es um die Funktion main der Datei /update_weights_from_tensor. Die Bearbeitung des Arguments serialized_named_tensors verursacht deserialization. Der Angriff lässt sich über das Netzwerk starten. Der Exploit ist öffentlich verfügbar und könnte genutzt werden.
Problem types
Product status
Timeline
| 2025-09-09: | Advisory disclosed |
| 2025-09-09: | VulDB entry created |
| 2025-09-09: | VulDB entry last update |
Credits
hl4x7eq28 (VulDB User)
References
vuldb.com/?id.323203 (VDB-323203 | lmsys sglang update_weights_from_tensor main deserialization)
vuldb.com/?ctiid.323203 (VDB-323203 | CTI Indicators (IOB, IOC, IOA))
vuldb.com/?submit.635919 (Submit #635919 | lmsys sglang >=0.4.6 Deserialization)
