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TI-2026-44040 Aliases CVE-2026-61435GHSA-2gpf-2492-q9jhGHSA-gp65-m7q3-4vjw

PraisonAI before 4.6.78 Authentication Bypass via Host Header Spoofing

Priority HIGH 77CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-287.

Summary

PraisonAI before 4.6.78 contains an authentication bypass in the Call API agent invocation endpoints (src/praisonai/praisonai/api/agent_invoke.py) when PRAISONAI_CALL_AUTH=disabled is configured. The safeguard intended to restrict the disabled-auth opt-out to localhost binding derives the bind host from request.url.hostname, which is taken from the client-controlled HTTP Host header. A remote, unauthenticated attacker who can reach the service over the network can send a spoofed 'Host: 127.0.0.1' header to bypass the localhost-only restriction and list (GET /api/v1/agents) and invoke (POST /api/v1/agents/{agent_id}/invoke) registered agents without authentication.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00489 42nd percentileScored 2026-11-07
Fix Fixed PraisonAI (MervinPraison): 4.6.78praisonai (PyPI): 4.6.78

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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 4.6.784.6.78Patch availableCNA
—praisonai (PyPI)before 4.6.784.6.78Patch availableGHSA-2gpf-2492-q9jh
  • PraisonAI VendorMervinPraison Affected before 4.6.78 Fixed in 4.6.78 Patch available CNA
  • praisonai (PyPI) Vendor— Affected before 4.6.78 Fixed in 4.6.78 Patch available GHSA-2gpf-2492-q9jh

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:*——MervinPraison
  • cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* Versions — — ·MervinPraison

Remediation

  • Fix · CNA PraisonAI (MervinPraison) Fixed in 4.6.78
  • Fix · GHSA-2gpf-2492-q9jh praisonai (PyPI) Fixed in 4.6.78 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    MervinPraison PraisonAI 4.6.78

    6 records Highest priority Priority HIGH 4 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-44041 PraisonAI before 4.6.78 Missing Webhook Signature VerificationPriority HIGH 77
    • TI-2026-44032 PraisonAI before 4.6.78 Authentication Bypass via HTTP-streamPriority HIGH 70
    • TI-2026-44043 PraisonAI before 4.6.78 Remote Code Execution via Broken AST SandboxPriority HIGH 66
    Show all 6 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-61435
  2. 2026-10-03 Alias added: GHSA-gp65-m7q3-4vjw
  3. 2026-10-09 Alias added: GHSA-2gpf-2492-q9jh
  4. 2026-10-09 Fix available: PyPI/[email protected] · GHSA-2gpf-2492-q9jh
  5. 2026-10-09 CVSS score added · GHSA-2gpf-2492-q9jh
  6. 2026-10-09 Weakness changed · GHSA-2gpf-2492-q9jh
  7. 2026-10-09 6 new references · GHSA-2gpf-2492-q9jh
  8. 2026-10-25 EPSS moved to the below the 50th percentile

References

Patch 2

Advisory 3

Other 1

  • TI-2026-79619 Missing authentication in PraisonAI AgentOS exposes agent chat CVSS 3.1CRITICAL 9.8
  • TI-2026-71236 Missing access control in PraisonAI AgentTeam exposes agent endpoints CVSS 3.1CRITICAL 9.8
  • TI-2026-44052 PraisonAI before 1.6.78 Remote Code Execution via CodeAgent CVSS 4.0CRITICAL 10.0
  • TI-2026-41123 praisonai-platform 0.1.4 still boots on the hardcoded JWT secret dev-secret-change-me (default-open production guard) CVSS 3.1CRITICAL 9.8
  • TI-2026-41122 praisonai-platform: default JWT signing secret 'dev-secret-change-me' enables token forgery CVSS 3.1CRITICAL 9.8
  • TI-2026-41118 PraisonAI MCPServer exposes unauthenticated HTTP tools/call CVSS 3.1CRITICAL 9.8
See all 177 →

Sources

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