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PraisonAI AgentMail before 4.6.78 Message Injection via Webhook

Priority HIGH 70CWE-290Published · 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 · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-290.

Summary

PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0031 24th 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-qj9c-59p6-8cgx
  • 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-qj9c-59p6-8cgx

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-qj9c-59p6-8cgx 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

    5 records Highest priority Priority HIGH 4 HIGH, 1 MEDIUM

    Other records, highest priority first

    • TI-2026-42820 PraisonAI before 4.6.78 SQL/CQL Injection via vector dimensionPriority HIGH 81
    • TI-2026-44044 PraisonAI before 4.6.78 Prompt Injection Defense BypassPriority HIGH 77
    • TI-2026-44050 PraisonAI before 4.6.78 Arbitrary File Write and Command ExecutionPriority HIGH 76

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-61428
  2. 2026-10-03 Alias added: GHSA-4mp6-8448-9vgv
  3. 2026-10-07 Alias added: GHSA-qj9c-59p6-8cgx
  4. 2026-10-07 Fix available: PyPI/[email protected] · GHSA-qj9c-59p6-8cgx
  5. 2026-10-07 CVSS score added · GHSA-qj9c-59p6-8cgx
  6. 2026-10-07 Weakness changed · GHSA-qj9c-59p6-8cgx
  7. 2026-10-07 3 new references · GHSA-qj9c-59p6-8cgx

References

  • 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