PraisonAI CLI automatically resolves @url mentions in prompt text and can read loopback URLs into model context
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · 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 version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, PraisonAI's direct-prompt CLI automatically expands `@url:` mentions in raw prompt text before agent execution begins. If a prompt contains `@url:<http-or-https-url>`, the CLI calls `MentionsParser.process(...)`. The `@url:` handler then performs a direct `urllib.request.urlopen()` request to the attacker-controlled URL and returns the response body. That response body is prepended to the final model prompt context. There is no loopback/private-address restriction, no metadata-service restriction, and no approval gate before the fetch. As a result, attacker-influenced prompt text can cause the operator's machine to fetch localhost-only HTTP resources and inject the response into model context. PraisonAI version 4.6.40 and praisonaiagents version 1.6.40 contain a fix.
Why it matters now
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 |
| MervinPraison | praisonaiagents | before 1.6.40 | 1.6.40 | Patch available | CNA |
| — | praisonaiagents (PyPI) | before 1.6.40 | 1.6.40 | Patch available | GHSA-5cxw-77wg-jrf3 |
| — | PraisonAI (PyPI) | before 4.6.40 | 4.6.40 | Patch available | GHSA-5cxw-77wg-jrf3 |
- PraisonAI VendorMervinPraison Affected before 4.6.40 Fixed in 4.6.40 Patch available CNA
- praisonaiagents VendorMervinPraison Affected before 1.6.40 Fixed in 1.6.40 Patch available CNA
- praisonaiagents (PyPI) Vendor— Affected before 1.6.40 Fixed in 1.6.40 Patch available GHSA-5cxw-77wg-jrf3
- PraisonAI (PyPI) Vendor— Affected before 4.6.40 Fixed in 4.6.40 Patch available GHSA-5cxw-77wg-jrf3
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 · CNA praisonaiagents (MervinPraison) Fixed in 1.6.40
- Fix · GHSA-5cxw-77wg-jrf3 praisonaiagents (PyPI) Fixed in 1.6.40 Advisory →
- Fix · GHSA-5cxw-77wg-jrf3 PraisonAI (PyPI) Fixed in 4.6.40 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-47395
- 2026-10-03 Alias added: GHSA-5cxw-77wg-jrf3
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-2026-47395 · CVE Program
- CVE-2026-47395 · NVD
- FIRST EPSS
- GHSA-5cxw-77wg-jrf3 · 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