Read the docs
TI-2026-28966 Aliases CVE-2026-40151GHSA-pm96-6xpr-978x

PraisonAI Affected by Unauthenticated Information Disclosure of Agent Instructions via /api/agents in AgentOS

Priority MEDIUM 57CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

PraisonAI is a multi-agent teams system. Prior to 4.5.128, the AgentOS deployment platform exposes a GET /api/agents endpoint that returns agent names, roles, and the first 100 characters of agent system instructions to any unauthenticated caller. The AgentOS FastAPI application has no authentication middleware, no API key validation, and defaults to CORS allow_origins=["*"] with host="0.0.0.0", making every deployment network-accessible and queryable from any origin by default. This vulnerability is fixed in 4.5.128.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00758 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed PraisonAI (MervinPraison): 4.5.128PraisonAI (PyPI): 4.5.128

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MervinPraisonPraisonAIbefore 4.5.1284.5.128Patch availableCNA
—PraisonAI (PyPI)before 4.5.1284.5.128Patch availableGHSA-pm96-6xpr-978x
  • PraisonAI VendorMervinPraison Affected before 4.5.128 Fixed in 4.5.128 Patch available CNA
  • PraisonAI (PyPI) Vendor— Affected before 4.5.128 Fixed in 4.5.128 Patch available GHSA-pm96-6xpr-978x

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*before 4.5.128VulnerableMervinPraison
  • cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* Versions before 4.5.128 Vulnerable ·MervinPraison

Remediation

  • Fix · CNA PraisonAI (MervinPraison) Fixed in 4.5.128
  • Fix · GHSA-pm96-6xpr-978x PraisonAI (PyPI) Fixed in 4.5.128 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40151
  2. 2026-10-03 Alias added: GHSA-pm96-6xpr-978x

References

Exploit 1

Advisory 1

Other 1

  • TI-2026-30083 Incomplete fix for CVE-2026-34935: Command Injection in MervinPraison/PraisonAI CVSS 3.1CRITICAL 9.8
  • TI-2026-29070 PraisonAI: Critical RCE via `type: job` workflow YAML CVSS 3.1CRITICAL 9.8
  • TI-2026-28940 PraisonAI has Server-Side Request Forgery via Unvalidated webhook_url in Jobs API CVSS 3.1CRITICAL 10.0
  • TI-2026-28768 PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading CVSS 3.1CRITICAL 9.8
  • TI-2026-27159 PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command() CVSS 3.1CRITICAL 9.8
  • TI-2026-27158 PraisonAI: Second-Order SQL Injection in `get_all_user_threads` CVSS 3.1CRITICAL 9.8
See all 42 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences