CVE-2026-40151: PraisonAI Affected by Unauthenticated Information Disclosure of Agent Instructions via /api/agents in AgentOS
MervinPraison · PraisonAI
Affected: MervinPraison PraisonAI · Exploitation: check available, not yet exploited
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 55% of scored CVEs
DescriptionCVE.org
PraisonAI is a multi-agent teams system. Prior to 4.5.128, the AgentOS deployment platform exposes a GET /api/agents endpoint that returns agent names, roles, and the first 100 characters of agent system instructions to any unauthenticated caller. The AgentOS FastAPI application has no authentication middleware, no API key validation, and defaults to CORS allow_origins=["*"] with host="0.0.0.0", making every deployment network-accessible and queryable from any origin by default. This vulnerability is fixed in 4.5.128.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- MervinPraison · PraisonAI< 4.5.128
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Check available, not yet exploited. A public nuclei template can confirm it on a system you are authorised to test.
- CISA KEV
- Not listed
- Public check
- PraisonAI AgentOS - Information Disclosure · nuclei template in projectdiscovery/nuclei-templates
- Vendor
- MervinPraison
- Published
- April 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-40151 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.