CVE-2025-49131Public exploitNetwork attack vector

Authenticated arbitrary file access via permissive syscalls

Published Jun 9, 2025 · Updated Jun 9, 2025

Sandbox escape in Labring FastGPT before 4.9.11 allows remote authenticated users to read or overwrite arbitrary files via submitted Python code. projects/sandbox/src/sandbox/constants.ts permits file-access and process-execution syscalls, while its AST check misses dynamic import calls. Low-privileged access to the workflow code runner is required; exploitation can expose or replace files as root and interrupt the sandbox.

CVSS severity6.3
Medium
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sandbox escape in Labring FastGPT before 4.9.11 allows remote authenticated users to read or overwrite arbitrary files via submitted Python code. projects/sandbox/src/sandbox/constants.ts permits file-access and process-execution syscalls, while its AST check misses dynamic import calls. Low-privileged access to the workflow code runner is required; exploitation can expose or replace files as root and interrupt the sandbox.

The record

CVE
CVE-2025-49131
Published
Jun 9, 2025
Updated
Jun 9, 2025
Vendor
Labring
Product
FastGPT
Classifications
T1005, T1059.006, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2025Record 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=< 4.9.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Labring · FastGPTversion=< 4.9.11

Published CVSS scores

6.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1005Data from Local System
T1059.006Python
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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