CVE-2026-40149Public exploit

Tool approval bypass via unauthenticated allowlist modification

Published Apr 9, 2026 · Updated Apr 9, 2026

Authentication bypass in the PraisonAI gateway before 4.5.128 allows local users to modify the agent tool approval allowlist. The /api/approval/allow-list handler treats an unset auth_token as authorized and inserts any submitted tool_name into ExecApprovalManager's permanent allowlist. With the default loopback binding and no token configured, a local process can make shell, file-write, or code-execution tools run without human review for the gateway process lifetime.

CVSS severity7.9
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in the PraisonAI gateway before 4.5.128 allows local users to modify the agent tool approval allowlist. The /api/approval/allow-list handler treats an unset auth_token as authorized and inserts any submitted tool_name into ExecApprovalManager's permanent allowlist. With the default loopback binding and no token configured, a local process can make shell, file-write, or code-execution tools run without human review for the gateway process lifetime.

The record

CVE
CVE-2026-40149
Published
Apr 9, 2026
Updated
Apr 9, 2026
Vendor
PraisonAI
Product
PraisonAI
Classifications
CWE-306, T1562.001
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 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=< 4.5.128

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

PraisonAI · PraisonAIversion=< 4.5.128

Published CVSS scores

7.9GitHubCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1562.001Impair Defenses: Disable or Modify Tools

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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