Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
sglang versions up to and including 0.5.9 are affected by an input validation flaw in the tokenizer loading code that results in unsafe deserialization. The flaw can be reached remotely, but exploitation is considered difficult and high complexity. No fixed version is listed, and the vendor did not respond to early disclosure.
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 |
|---|---|---|---|---|
| 6.3 | Medium | 4.0 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X | CNA (VulDB) |
- CISA KEV Not listed.
- EPSS 0.0037, the 31st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:02 UTC First seen by agentprime
- 31 Oct 2026, 15:02 UTC Confirmed by OSV