CVE-2026-32128Public exploitNetwork attack vector

Authenticated file overwrite via stdout descriptor remap

Published Mar 11, 2026 · Updated Mar 11, 2026

Arbitrary file write in Labring FastGPT 4.14.7 and earlier allows remote authenticated users to overwrite files in its Python sandbox. The seccomp policy permits write calls by descriptor number while fcntl can redirect stdout to a writable file opened with creation or truncation flags. Access to submit Python sandbox code is required; writes run as container root but remain bounded to writable paths inside the sandbox container.

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

What happened

Arbitrary file write in Labring FastGPT 4.14.7 and earlier allows remote authenticated users to overwrite files in its Python sandbox. The seccomp policy permits write calls by descriptor number while fcntl can redirect stdout to a writable file opened with creation or truncation flags. Access to submit Python sandbox code is required; writes run as container root but remain bounded to writable paths inside the sandbox container.

The record

CVE
CVE-2026-32128
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
Labring
Product
FastGPT
Classifications
CWE-184, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 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=<= 4.14.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Labring · FastGPTversion=<= 4.14.7

Published CVSS scores

6.3GitHub, Inc.CVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-184Incomplete List of Disallowed Inputs
T1059.006Command and Scripting Interpreter: Python

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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