by Kastro
Paper/Archive/CVE-2026-93034

CVE-2026-93034

SGLang SGLang — CVE-2026-93034

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
37
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 39.8.398 × 208.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

SGLang contains an arbitrary code execution vulnerability caused by the ZMQ message decoder unconditionally deserializing PickleWrapper payloads via pickle.loads() in _maybe_unwrap_pickle without type allowlisting or authentication; this vulnerability persists via the msgpack path even when SGLANG_USE_PICKLE_IPC is disabled, and becomes remotely exploitable if data-parallel attention is enabled with a non-loopback --dist-init-addr setting.

Affected

ProductAffectedFixed inSource
SGLang≤ v0.5.20–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refm00dy.sh/notes/disabling-pickle-did-not-remove-pickle?palette=mineralrefgithub.com/sgl-project/sglang/tree/main