Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
SGLang versions from 0.4.1.post7 through 0.5.12 are vulnerable to unauthenticated remote code execution when the --enable-custom-logit-processor option is turned on. The flaw lies in deserializing Python objects with dill.loads() without validation, so an attacker who can send requests to the server could run code on it. No fixed version is listed, so the source offers no upgrade; disabling --enable-custom-logit-processor is the available mitigation.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.8 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | OSV |
- CISA KEV Not listed.
- EPSS 0.0059, the 48th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.