CVE-2026-93034Network attack vectorHinoki check available

Unauthenticated code execution via unchecked PickleWrapper deserialization

Published Oct 8, 2026 · Updated Oct 8, 2026

Unsafe deserialization in SGLang 0.5.20 and earlier allows remote attackers to execute code via crafted ZMQ messages. The decoder's _maybe_unwrap_pickle calls pickle.loads() on PickleWrapper payloads without authentication or type allowlisting, including through msgpack when SGLANG_USE_PICKLE_IPC is disabled. Remote exploitation requires enabled data-parallel attention, a non-loopback --dist-init-addr setting, and network access to the affected messaging endpoint.

CVSS severityUnavailable
Unscored
EPSS probability0.46%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Unsafe deserialization in SGLang 0.5.20 and earlier allows remote attackers to execute code via crafted ZMQ messages. The decoder's _maybe_unwrap_pickle calls pickle.loads() on PickleWrapper payloads without authentication or type allowlisting, including through msgpack when SGLANG_USE_PICKLE_IPC is disabled. Remote exploitation requires enabled data-parallel attention, a non-loopback --dist-init-addr setting, and network access to the affected messaging endpoint.

The record

CVE
CVE-2026-93034
Published
Oct 8, 2026
Updated
Oct 8, 2026
Vendor
SGLang Project
Product
SGLang
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=v0.5.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SGLang Project · SGLangversion=0 <=v0.5.20

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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