{"items":[{"id":"NVI-00010746","kind":"vulnerability","title":"Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9pvw-hwfg-92h5","CVE-2026-115892"],"plain_summary":"GitHub lists this reviewed advisory for wasmtime, wasmtime. 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-1209b26dcdc833769cc3c4544adc3dec"],"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":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.434%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.3779. Missing scores are unknown.","source_id":"sr-1209b26dcdc833769cc3c4544adc3dec"}],"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-e22fb7dff65f6aa469c32b0478491e32","url":"https://github.com/advisories/GHSA-9pvw-hwfg-92h5","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9pvw-hwfg-92h5","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-1209b26dcdc833769cc3c4544adc3dec","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-2026-115892","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.313Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e22fb7dff65f6aa469c32b0478491e32"],"technology":"wasmtime","known_exclusions":[],"conditions_summary":"### Summary\n\nWasmtime may panic when the host lowers a component model `stream` or `future` into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as `StreamAny` or `FutureAny`, and then passes it to a guest function with a different payload type.\n\nGHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this area, and this advisory is being issued for portions of Wasmtime that were not fixed as part of that advisory.\n\n### Impact\n\nThis affects embedders that do all of the following:\n\n1. Create streams or futures on the host with `StreamReader::new` or `FutureReader::new`\n2. Pass them to guest code and receive them back as `StreamAny`, `FutureAny`, `Val::Stream`/`Val::Future`, or a typed reader whose payload is one of these.\n3. Pass them on to a guest function whose `stream` or `future` payload type differs from the type the host created them with.\n\nA guest can cause the mismatch in step 3 when it controls the types of the functions it exports or of the values it returns. In tha","public_affected_ranges":[">= 46.0.0, < 48.0.7"]},{"certainty":"source_listed","source_ids":["sr-e22fb7dff65f6aa469c32b0478491e32"],"technology":"wasmtime","known_exclusions":[],"conditions_summary":"### Summary\n\nWasmtime may panic when the host lowers a component model `stream` or `future` into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as `StreamAny` or `FutureAny`, and then passes it to a guest function with a different payload type.\n\nGHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this area, and this advisory is being issued for portions of Wasmtime that were not fixed as part of that advisory.\n\n### Impact\n\nThis affects embedders that do all of the following:\n\n1. Create streams or futures on the host with `StreamReader::new` or `FutureReader::new`\n2. Pass them to guest code and receive them back as `StreamAny`, `FutureAny`, `Val::Stream`/`Val::Future`, or a typed reader whose payload is one of these.\n3. Pass them on to a guest function whose `stream` or `future` payload type differs from the type the host created them with.\n\nA guest can cause the mismatch in step 3 when it controls the types of the functions it exports or of the values it returns. In tha","public_affected_ranges":[">= 49.0.0, < 49.0.4"]}],"null_published_at":"2026-11-08T08:10:32.023Z","source_updated_at":"2026-10-23T22:04:47.000Z","source_disclosed_at":"2026-10-23T22:04:45.000Z","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-00010746","kind":"vulnerability","title":"Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9pvw-hwfg-92h5","CVE-2026-115892"],"plain_summary":"GitHub lists this reviewed advisory for wasmtime, wasmtime. 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-12e2c40dc4c0b8130006b27ea489c0a1"],"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":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.434%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.37648. Missing scores are unknown.","source_id":"sr-12e2c40dc4c0b8130006b27ea489c0a1"}],"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-e22fb7dff65f6aa469c32b0478491e32","url":"https://github.com/advisories/GHSA-9pvw-hwfg-92h5","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9pvw-hwfg-92h5","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-12e2c40dc4c0b8130006b27ea489c0a1","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-2026-115892","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.842Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e22fb7dff65f6aa469c32b0478491e32"],"technology":"wasmtime","known_exclusions":[],"conditions_summary":"### Summary\n\nWasmtime may panic when the host lowers a component model `stream` or `future` into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as `StreamAny` or `FutureAny`, and then passes it to a guest function with a different payload type.\n\nGHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this area, and this advisory is being issued for portions of Wasmtime that were not fixed as part of that advisory.\n\n### Impact\n\nThis affects embedders that do all of the following:\n\n1. Create streams or futures on the host with `StreamReader::new` or `FutureReader::new`\n2. Pass them to guest code and receive them back as `StreamAny`, `FutureAny`, `Val::Stream`/`Val::Future`, or a typed reader whose payload is one of these.\n3. Pass them on to a guest function whose `stream` or `future` payload type differs from the type the host created them with.\n\nA guest can cause the mismatch in step 3 when it controls the types of the functions it exports or of the values it returns. In tha","public_affected_ranges":[">= 46.0.0, < 48.0.7"]},{"certainty":"source_listed","source_ids":["sr-e22fb7dff65f6aa469c32b0478491e32"],"technology":"wasmtime","known_exclusions":[],"conditions_summary":"### Summary\n\nWasmtime may panic when the host lowers a component model `stream` or `future` into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as `StreamAny` or `FutureAny`, and then passes it to a guest function with a different payload type.\n\nGHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this area, and this advisory is being issued for portions of Wasmtime that were not fixed as part of that advisory.\n\n### Impact\n\nThis affects embedders that do all of the following:\n\n1. Create streams or futures on the host with `StreamReader::new` or `FutureReader::new`\n2. Pass them to guest code and receive them back as `StreamAny`, `FutureAny`, `Val::Stream`/`Val::Future`, or a typed reader whose payload is one of these.\n3. Pass them on to a guest function whose `stream` or `future` payload type differs from the type the host created them with.\n\nA guest can cause the mismatch in step 3 when it controls the types of the functions it exports or of the values it returns. In tha","public_affected_ranges":[">= 49.0.0, < 49.0.4"]}],"null_published_at":"2026-11-04T10:04:47.613Z","source_updated_at":"2026-10-23T22:04:47.000Z","source_disclosed_at":"2026-10-23T22:04:45.000Z","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-00010746","kind":"vulnerability","title":"Wasmtime: Panic lowering a host-created component model stream into a guest that expects a different payload type","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9pvw-hwfg-92h5","CVE-2026-115892"],"plain_summary":"GitHub lists this reviewed advisory for wasmtime, wasmtime. 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-e22fb7dff65f6aa469c32b0478491e32"],"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":[],"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-e22fb7dff65f6aa469c32b0478491e32","url":"https://github.com/advisories/GHSA-9pvw-hwfg-92h5","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9pvw-hwfg-92h5","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-e22fb7dff65f6aa469c32b0478491e32"],"technology":"wasmtime","known_exclusions":[],"conditions_summary":"### Summary\n\nWasmtime may panic when the host lowers a component model `stream` or `future` into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as `StreamAny` or `FutureAny`, and then passes it to a guest function with a different payload type.\n\nGHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this area, and this advisory is being issued for portions of Wasmtime that were not fixed as part of that advisory.\n\n### Impact\n\nThis affects embedders that do all of the following:\n\n1. Create streams or futures on the host with `StreamReader::new` or `FutureReader::new`\n2. Pass them to guest code and receive them back as `StreamAny`, `FutureAny`, `Val::Stream`/`Val::Future`, or a typed reader whose payload is one of these.\n3. Pass them on to a guest function whose `stream` or `future` payload type differs from the type the host created them with.\n\nA guest can cause the mismatch in step 3 when it controls the types of the functions it exports or of the values it returns. In tha","public_affected_ranges":[">= 46.0.0, < 48.0.7"]},{"certainty":"source_listed","source_ids":["sr-e22fb7dff65f6aa469c32b0478491e32"],"technology":"wasmtime","known_exclusions":[],"conditions_summary":"### Summary\n\nWasmtime may panic when the host lowers a component model `stream` or `future` into a guest, if the host created that stream or future with one payload type and the guest expects a different one. This can happen when an embedder creates a stream or future, passes it through a guest, receives it back under a type-erased type such as `StreamAny` or `FutureAny`, and then passes it to a guest function with a different payload type.\n\nGHSA-63h4-6cx9-pjfj is a related advisory also fixing issues within this area, and this advisory is being issued for portions of Wasmtime that were not fixed as part of that advisory.\n\n### Impact\n\nThis affects embedders that do all of the following:\n\n1. Create streams or futures on the host with `StreamReader::new` or `FutureReader::new`\n2. Pass them to guest code and receive them back as `StreamAny`, `FutureAny`, `Val::Stream`/`Val::Future`, or a typed reader whose payload is one of these.\n3. Pass them on to a guest function whose `stream` or `future` payload type differs from the type the host created them with.\n\nA guest can cause the mismatch in step 3 when it controls the types of the functions it exports or of the values it returns. In tha","public_affected_ranges":[">= 49.0.0, < 49.0.4"]}],"null_published_at":"2026-10-31T22:27:12.379Z","source_updated_at":"2026-10-23T22:04:47.000Z","source_disclosed_at":"2026-10-23T22:04:45.000Z","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"}