CVE-2026-45758Known exploitationNetwork attack vector

Remote code execution via import-triggered payload download

Published Jun 5, 2026 · Updated Jun 5, 2026

Embedded malicious code in Guardrails AI Guardrails 0.10.1 allows remote attackers to execute a downloaded payload when the package is imported. Injected statements in guardrails/init.py run at import time, retrieve a remote Python artifact, and execute it on Linux. Execution requires installation of the compromised PyPI release and an import of guardrails; the payload then runs with the importing process's access to local files and credentials.

CVSS severity9.6
Critical
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Embedded malicious code in Guardrails AI Guardrails 0.10.1 allows remote attackers to execute a downloaded payload when the package is imported. Injected statements in guardrails/init.py run at import time, retrieve a remote Python artifact, and execute it on Linux. Execution requires installation of the compromised PyPI release and an import of guardrails; the payload then runs with the importing process's access to local files and credentials.

The record

CVE
CVE-2026-45758
Published
Jun 5, 2026
Updated
Jun 5, 2026
Vendor
Guardrails AI
Product
Guardrails
Classifications
CWE-506, T1195.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2026Exploitation reportedMalicious Guardrails PyPI release publication
  2. Jun 5, 2026CVE publishedPublication date reported by the CVE source.
  3. Jun 5, 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== 0.10.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Guardrails AI · Guardrailsversion== 0.10.1

Published CVSS scores

9.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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.

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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 exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-506Embedded Malicious Code
T1195.002Compromise Software Supply Chain

Public exploit references

No public exploit references are available in this record.

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Reported exploitation

Technologies

Your stack

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Your stack

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