CVE-2026-14890Network attack vector

Unauthenticated code execution via unsafe pickle deserialization

Published Jul 16, 2026 · Updated Jul 16, 2026

Unsafe deserialization in SGLang 0.5.14 and earlier allows remote attackers to execute arbitrary code through the expert-backup socket. ExpertBackupManager binds an unauthenticated ZeroMQ PULL socket to a routable address and passes attacker-controlled payloads to Python pickle deserialization. Exploitation requires the expert-parallel backup subsystem to be enabled and its socket to be network-reachable; code runs with the SGLang process's privileges.

CVSS severity9.1
Critical
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in SGLang 0.5.14 and earlier allows remote attackers to execute arbitrary code through the expert-backup socket. ExpertBackupManager binds an unauthenticated ZeroMQ PULL socket to a routable address and passes attacker-controlled payloads to Python pickle deserialization. Exploitation requires the expert-parallel backup subsystem to be enabled and its socket to be network-reachable; code runs with the SGLang process's privileges.

The record

CVE
CVE-2026-14890
Published
Jul 16, 2026
Updated
Jul 16, 2026
Vendor
SGLang
Product
SGLang
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 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 <=0.5.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SGLang · SGLangversion=0 <=0.5.14

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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