CVE-2026-15969 — CRITICAL (9.8)

Q: How severe is CVE-2026-15969?

CVE-2026-15969 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-15969?

Check the references section above for vendor advisories and patch information. Affected products include: Lmsys Sglang.

Vulnerability Description

SGLang contains an unauthenticated RCE in /load_lora_adapter_from_tensors via bypass of SafeUnpickler’s incomplete denylist, allowing arbitrary command execution through crafted base64-encoded pickle payloads.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Lmsys	Sglang	<= 0.5.15

Related Weaknesses (CWE)

CWE-502

References

https://github.com/sgl-project/sglang/security/advisories/GHSA-2wvm-gjg7-5jfmBroken Link
https://thoughts.apoorvdayal.com/posts/sglang-disclosures/Third Party AdvisoryMitigation

FAQ

What is CVE-2026-15969?

CVE-2026-15969 is a vulnerability with a CVSS score of 9.8 (CRITICAL). SGLang contains an unauthenticated RCE in /load_lora_adapter_from_tensors via bypass of SafeUnpickler’s incomplete denylist, allowing arbitrary command execution through crafted base64-encoded pickle ...

How severe is CVE-2026-15969?

CVE-2026-15969 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-15969?

Check the references section above for vendor advisories and patch information. Affected products include: Lmsys Sglang.