{"items":[{"id":"NVI-00018559","kind":"vulnerability","title":"PraisonAI's unauthenticated A2A official example can reach real LLM-driven `eval()` tool execution","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-vg22-4gmj-prxw","CVE-2026-47391"],"plain_summary":"GitHub lists this reviewed advisory for PraisonAI. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-3baf9e4a212056751ad08cae1563615c"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-05-29T22:31:28.000Z","value":"9.8 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-3baf9e4a212056751ad08cae1563615c"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-3baf9e4a212056751ad08cae1563615c","url":"https://github.com/advisories/GHSA-vg22-4gmj-prxw","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-vg22-4gmj-prxw","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:53:14.635Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3baf9e4a212056751ad08cae1563615c"],"technology":"PraisonAI","known_exclusions":[],"conditions_summary":"## Summary\n\nThe first-party PraisonAI A2A server example combines three behaviors into a remotely exploitable Critical chain:\n\n1. The example exposes an A2A server without configuring `auth_token`.\n2. The same example binds the server to `0.0.0.0`.\n3. The example registers a `calculate(expression)` tool implemented with Python `eval(expression)`.\n\nAn unauthenticated network client can send a JSON-RPC `message/send` request to `/a2a`. The A2A handler passes the attacker-controlled message to `agent.chat()`. With a real Gemini LLM (`gemini/gemini-2.5-flash-lite`), the model invoked the registered `calculate` tool, causing the example's `eval()` call to execute Python in the server process. The canary wrote a marker file from an unauthenticated `/a2a` request.\n\nThis is not a claim that every A2A deployment is automatically RCE. The Critical chain is confirmed for the first-party A2A example, and for deployments that follow the same pattern: public unauthenticated A2A plus an unsafe tool such as this `eval()`-based `calculate` tool. The default unauthenticated A2A surface is the remote entry point; the official example's `eval()` tool provides the code execution sink.\n\n\nEarlier note:\n\n","public_affected_ranges":["<= 4.6.39"]}],"null_published_at":"2026-11-07T07:07:39.854Z","source_updated_at":"2026-05-29T22:31:28.000Z","source_disclosed_at":"2026-05-29T22:31:26.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-07T00:53:14.635Z"}],"next_cursor":null,"snapshot_revision":"42594"}