{"items":[{"id":"NVI-00010623","kind":"vulnerability","title":"Strands Agents SDK: Exposure of data element to wrong session in the A2A Server","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4v6f-7vjh-6x4m","CVE-2026-115419"],"plain_summary":"GitHub lists this reviewed advisory for strands-agents, @strands-agents/sdk. 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-246498650ab4e84aed1e67f83e695fca"],"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},{"summary":"The original advisory lists fixed boundaries 1.5.0 for @strands-agents/sdk. Confirm the publisher’s latest guidance.","source_ids":["sr-73975d8af8f9355fb6f8cf235884c886"],"action_type":"vendor_patch","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":"2026-10-23T20:48:30.000Z","value":"8.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-70dee984a602c3c109af672628991e4d"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.426%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.36893. Missing scores are unknown.","source_id":"sr-246498650ab4e84aed1e67f83e695fca"}],"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-70dee984a602c3c109af672628991e4d","url":"https://github.com/advisories/GHSA-4v6f-7vjh-6x4m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4v6f-7vjh-6x4m","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-73975d8af8f9355fb6f8cf235884c886","url":"https://github.com/advisories/GHSA-4v6f-7vjh-6x4m","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4v6f-7vjh-6x4m","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-05T03:46:52.885Z"},{"id":"sr-246498650ab4e84aed1e67f83e695fca","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-115419","publisher":"FIRST EPSS","observed_at":"2026-10-31T23:13:27.689Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-70dee984a602c3c109af672628991e4d"],"technology":"strands-agents","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["< 1.43.0"]},{"certainty":"source_listed","source_ids":["sr-70dee984a602c3c109af672628991e4d"],"technology":"@strands-agents/sdk","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["< 1.5.0"]},{"certainty":"source_listed","source_ids":["sr-73975d8af8f9355fb6f8cf235884c886"],"technology":"strands-agents","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.43.0"]},{"certainty":"source_listed","source_ids":["sr-73975d8af8f9355fb6f8cf235884c886"],"technology":"@strands-agents/sdk","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["SEMVER: introduced 0; fixed 1.5.0"]}],"null_published_at":"2026-11-05T03:52:54.736Z","source_updated_at":"2026-10-23T20:48:30.000Z","source_disclosed_at":"2026-10-23T20:48:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T22:07:08.657Z"},{"id":"NVI-00010623","kind":"vulnerability","title":"Strands Agents SDK: Exposure of data element to wrong session in the A2A Server","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4v6f-7vjh-6x4m","CVE-2026-115419"],"plain_summary":"GitHub lists this reviewed advisory for strands-agents, @strands-agents/sdk. 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-246498650ab4e84aed1e67f83e695fca"],"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":"2026-10-23T20:48:30.000Z","value":"8.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-70dee984a602c3c109af672628991e4d"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.426%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.36893. Missing scores are unknown.","source_id":"sr-246498650ab4e84aed1e67f83e695fca"}],"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-70dee984a602c3c109af672628991e4d","url":"https://github.com/advisories/GHSA-4v6f-7vjh-6x4m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4v6f-7vjh-6x4m","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-246498650ab4e84aed1e67f83e695fca","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-115419","publisher":"FIRST EPSS","observed_at":"2026-10-31T23:13:27.689Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-70dee984a602c3c109af672628991e4d"],"technology":"strands-agents","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["< 1.43.0"]},{"certainty":"source_listed","source_ids":["sr-70dee984a602c3c109af672628991e4d"],"technology":"@strands-agents/sdk","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["< 1.5.0"]}],"null_published_at":"2026-10-31T23:18:22.442Z","source_updated_at":"2026-10-23T20:48:30.000Z","source_disclosed_at":"2026-10-23T20:48:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T22:07:08.657Z"},{"id":"NVI-00010623","kind":"vulnerability","title":"Strands Agents SDK: Exposure of data element to wrong session in the A2A Server","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4v6f-7vjh-6x4m","CVE-2026-115419"],"plain_summary":"GitHub lists this reviewed advisory for strands-agents, @strands-agents/sdk. 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-70dee984a602c3c109af672628991e4d"],"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":"2026-10-23T20:48:30.000Z","value":"8.1 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-70dee984a602c3c109af672628991e4d"}],"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-70dee984a602c3c109af672628991e4d","url":"https://github.com/advisories/GHSA-4v6f-7vjh-6x4m","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4v6f-7vjh-6x4m","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-70dee984a602c3c109af672628991e4d"],"technology":"strands-agents","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["< 1.43.0"]},{"certainty":"source_listed","source_ids":["sr-70dee984a602c3c109af672628991e4d"],"technology":"@strands-agents/sdk","known_exclusions":[],"conditions_summary":"**Summary**  \nStrands Agents SDK is an open-source SDK, available for Python (strands-agents) and TypeScript (@strands-agents/sdk), for building and running AI agents. An issue exists where, under certain circumstances, the Agent2Agent (A2A) server shares conversation history across callers with different context\\_id values, allowing one caller to read and influence another caller's session.  \n  \n**Impact**  \nThe A2A server did not properly isolate conversation state between callers. In multi-tenant deployments, an authenticated remote user could access another caller's conversation history or influence model behavior for other callers (CWE-488: Unintended Disclosure of Data Element to Wrong Session). This affects any deployment where an A2A server is reachable by more than one user or tenant.  \n  \n**Impacted versions:**  \nstrands-agents (Python): all versions containing the multiagent.a2a module, < 1.43.0  \n@strands-agents/sdk (TypeScript): < 1.5.0  \n  \n**Patches**  \nThis issue has been addressed in strands-agents version 1.43.0 and @strands-agents/sdk version 1.5.0. The A2A server now uses an agent factory so conversation state is isolated per A2A context\\_id. We recommend upgrad","public_affected_ranges":["< 1.5.0"]}],"null_published_at":"2026-10-31T22:27:09.626Z","source_updated_at":"2026-10-23T20:48:30.000Z","source_disclosed_at":"2026-10-23T20:48:29.000Z","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":"2026-10-31T22:07:08.657Z"}],"next_cursor":null,"snapshot_revision":"42594"}