PraisonAI has an Arbitrary File Write in Python API
Priority MEDIUM 64CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.
Summary
PraisonAI is a multi-agent teams system. Prior to version 4.6.40, hidden metadata in a webpage causes PraisonAI agents to write attacker-controlled content to arbitrary paths. `write_file` skips path validation when `workspace=None` (always `None` in production). Version 4.6.40 fixes the issue.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00455 39th percentileScored 2026-11-07
Fix Fixed PraisonAI (MervinPraison): 4.6.40PraisonAI (PyPI): 4.6.40
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MervinPraison | PraisonAI | before 4.6.40 | 4.6.40 | Patch available | CNA |
| — | PraisonAI (PyPI) | before 4.6.40 | 4.6.40 | Patch available | GHSA-hvhp-v2gc-268q |
- PraisonAI VendorMervinPraison Affected before 4.6.40 Fixed in 4.6.40 Patch available CNA
- PraisonAI (PyPI) Vendor— Affected before 4.6.40 Fixed in 4.6.40 Patch available GHSA-hvhp-v2gc-268q
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* | — | — | MervinPraison |
- cpe:2.3:a:praison:praisonai:*:*:*:*:*:*:*:* Versions — — ·MervinPraison
Remediation
- Fix · CNA PraisonAI (MervinPraison) Fixed in 4.6.40
- Fix · GHSA-hvhp-v2gc-268q PraisonAI (PyPI) Fixed in 4.6.40 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-47397
- 2026-10-03 Alias added: GHSA-hvhp-v2gc-268q
References
More MervinPraison vulnerabilities
- 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
Sources
- CVE-2026-47397 · CVE Program
- CVE-2026-47397 · NVD
- FIRST EPSS
- GHSA-hvhp-v2gc-268q · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences