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PraisonAI before 4.6.78 Prompt Injection Defense Bypass

Priority HIGH 77CWE-1188Published · 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
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-693.

Summary

PraisonAI versions before 4.6.78 contain a prompt injection defense misconfiguration where the block threshold defaults to CRITICAL severity, allowing HIGH-level threats to pass through unblocked. Attackers can submit single-vector prompt injection attacks such as instruction overrides or financial manipulation that trigger HIGH severity detection but are logged without blocking, enabling system prompt extraction and unauthorized tool invocations.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0034 27th 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-fj8f-m44g-c479
  • 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-fj8f-m44g-c479

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-fj8f-m44g-c479 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-2026-44050 PraisonAI before 4.6.78 Arbitrary File Write and Command ExecutionPriority HIGH 76
    • TI-2026-44033 PraisonAI AgentMail before 4.6.78 Message Injection via WebhookPriority HIGH 70

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-61439
  2. 2026-10-03 Alias added: GHSA-5r2q-3wg3-57m2
  3. 2026-10-07 Alias added: GHSA-fj8f-m44g-c479
  4. 2026-10-07 Fix available: PyPI/[email protected] · GHSA-fj8f-m44g-c479
  5. 2026-10-07 CVSS score added · GHSA-fj8f-m44g-c479
  6. 2026-10-07 Weakness changed · GHSA-fj8f-m44g-c479
  7. 2026-10-07 3 new references · GHSA-fj8f-m44g-c479

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