SGLang contains an unauthenticated RCE in /load_lora_adapter_from_tensors via bypass of SafeUnpickler’s incomplete denylist, allowing arbitrary… (CVE-2026-15969)
SGLang has an unauthenticated remote code execution (RCE) vulnerability in the /load_lora_adapter_from_tensors endpoint. This occurs due to an incomplete denylist in the SafeUnpickler mechanism, which can be bypassed by crafted base64-encoded pickle payloads. Exploitation allows arbitrary command execution without authentication.
AI Analysis
Technical Summary
The vulnerability in SGLang involves an unauthenticated RCE via the /load_lora_adapter_from_tensors endpoint. The root cause is the incomplete denylist in SafeUnpickler, which is intended to prevent unsafe deserialization of pickle data. Attackers can craft base64-encoded pickle payloads that bypass this denylist, leading to arbitrary command execution on the affected system.
Potential Impact
Successful exploitation results in arbitrary command execution on the vulnerable system without requiring authentication. This can lead to full system compromise depending on the privileges of the application process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the /load_lora_adapter_from_tensors endpoint and avoid processing untrusted pickle data. Monitor vendor channels for updates and apply official patches once released.
SGLang contains an unauthenticated RCE in /load_lora_adapter_from_tensors via bypass of SafeUnpickler’s incomplete denylist, allowing arbitrary… (CVE-2026-15969)
Description
SGLang has an unauthenticated remote code execution (RCE) vulnerability in the /load_lora_adapter_from_tensors endpoint. This occurs due to an incomplete denylist in the SafeUnpickler mechanism, which can be bypassed by crafted base64-encoded pickle payloads. Exploitation allows arbitrary command execution without authentication.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in SGLang involves an unauthenticated RCE via the /load_lora_adapter_from_tensors endpoint. The root cause is the incomplete denylist in SafeUnpickler, which is intended to prevent unsafe deserialization of pickle data. Attackers can craft base64-encoded pickle payloads that bypass this denylist, leading to arbitrary command execution on the affected system.
Potential Impact
Successful exploitation results in arbitrary command execution on the vulnerable system without requiring authentication. This can lead to full system compromise depending on the privileges of the application process.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the /load_lora_adapter_from_tensors endpoint and avoid processing untrusted pickle data. Monitor vendor channels for updates and apply official patches once released.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-359v-m36h-r94v
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-15969"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a6bdd8b9c2644c7f8da72fb
Added to database: 07/30/2026, 23:26:03 UTC
Last enriched: 07/30/2026, 23:34:00 UTC
Last updated: 07/31/2026, 02:34:27 UTC
Views: 8
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