EUVD-2026-21172
GHSA-pm96-6xpr-978x
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionGitHub Advisory
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.
AnalysisAI
PraisonAI AgentOS prior to version 4.5.128 exposes agent metadata including names, roles, and system instruction snippets via an unauthenticated GET /api/agents endpoint accessible from any network origin due to missing authentication middleware and permissive CORS defaults. This information disclosure vulnerability allows remote attackers to enumerate agent configurations without credentials, potentially revealing sensitive operational details that could inform social engineering or reconnaissance attacks against multi-agent deployments.
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Vulnerability AssessmentAI
| Risk Assessment | This vulnerability presents moderate real-world risk despite a CVSS base score of 5.3 (low-to-moderate). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker scans for internet-exposed AgentOS instances (default binding to 0.0.0.0 makes them discoverable). Upon finding an instance, the attacker sends an unauthenticated HTTP GET request to /api/agents and receives a JSON response listing all agent names, roles, and the first 100 characters of their system instructions. … |
| Remediation | Vendor-released patch: PraisonAI 4.5.128. … Detailed patch versions, workarounds, and compensating controls in full report. |
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