CVE-2026-15971Network attack vector

Remote code execution via dumper filter eval

Published Jul 30, 2026 · Updated Jul 30, 2026

Eval injection in SGLang 0 through 0.5.15 allows remote attackers to execute code through inference requests when the dumper is enabled. The dumper evaluates a caller-controlled filter expression with Python eval after removing builtins, but object traversal recovers process-execution primitives. Exploitation requires DUMPER_SERVER_PORT; standalone mode exposes a separate unauthenticated HTTP listener, while reuse mode follows optional admin authentication.

CVSS severity9.8
Critical
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Eval injection in SGLang 0 through 0.5.15 allows remote attackers to execute code through inference requests when the dumper is enabled. The dumper evaluates a caller-controlled filter expression with Python eval after removing builtins, but object traversal recovers process-execution primitives. Exploitation requires DUMPER_SERVER_PORT; standalone mode exposes a separate unauthenticated HTTP listener, while reuse mode follows optional admin authentication.

The record

CVE
CVE-2026-15971
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
SGLang
Product
SGLang
Classifications
CWE-95, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 30, 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 <=v0.5.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SGLang · SGLangversion=0 <=v0.5.15

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-95Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
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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