{"items":[{"id":"NVI-00013075","kind":"vulnerability","title":"Tinypool: Prototype Pollution gadget in worker options leads to Remote Code Execution","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5gmw-xhrv-c9v3","CVE-2026-104848"],"plain_summary":"GitHub lists this reviewed advisory for tinypool. 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-0a1689198f0cdb660661459cf2174d5a"],"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":"2026-11-03T12:00:27.000Z","value":"0.497%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.42696. Missing scores are unknown.","source_id":"sr-0a1689198f0cdb660661459cf2174d5a"}],"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-552e3a22d70c6697e805354df35e8d72","url":"https://github.com/advisories/GHSA-5gmw-xhrv-c9v3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5gmw-xhrv-c9v3","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"},{"id":"sr-0a1689198f0cdb660661459cf2174d5a","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-2026-104848","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.770Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-552e3a22d70c6697e805354df35e8d72"],"technology":"tinypool","known_exclusions":[],"conditions_summary":"`tinypool` passes worker options to `new Worker()` by reading them off a plain object whose prototype is `Object.prototype`. Options the application did not set are resolved through the prototype chain and then passed explicitly to `worker_threads.Worker`.\n\nNode core ignores `Worker` options inherited from `Object.prototype`. By reading them and passing them explicitly, tinypool re-materialises them as own properties and defeats that protection.\n\n\nTwo keys reach code execution:\n\n1. **`execArgv`** — polluting `Object.prototype.execArgv = ['--require', '/path/to/attacker.js']` causes every pool worker to load the attacker's script.\n2. **`env`** — polluting `Object.prototype.env = { NODE_OPTIONS: '--require /path/to/attacker.js' }` achieves the same via environment injection.\n\n## Root cause\n\n`dist/index.js` lines 508-511:\n\n```js\nenv:            this.options.env,\nargv:           this.options.argv,\nexecArgv:       this.options.execArgv,\nresourceLimits: this.options.resourceLimits,\n```\n\n`this.options` is built at line 470 via object spread:\n\n```js\nthis.options = { ...kDefaultOptions, ...options, filename, maxQueue: 0 };\n```\n\n## Impact\n\nArbitrary code execution inside every worker the poo","public_affected_ranges":["<= 2.1.0"]}],"null_published_at":"2026-11-04T10:04:41.578Z","source_updated_at":"2026-10-05T22:50:02.000Z","source_disclosed_at":"2026-10-05T22:50:01.000Z","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":"2026-11-01T01:39:10.636Z"},{"id":"NVI-00013075","kind":"vulnerability","title":"Tinypool: Prototype Pollution gadget in worker options leads to Remote Code Execution","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5gmw-xhrv-c9v3","CVE-2026-104848"],"plain_summary":"GitHub lists this reviewed advisory for tinypool. 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-10910df0c48edb3984ab70cb9bdcb120"],"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":"2026-11-01T12:00:16.000Z","value":"0.497%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.42651. Missing scores are unknown.","source_id":"sr-10910df0c48edb3984ab70cb9bdcb120"}],"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-552e3a22d70c6697e805354df35e8d72","url":"https://github.com/advisories/GHSA-5gmw-xhrv-c9v3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5gmw-xhrv-c9v3","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"},{"id":"sr-10910df0c48edb3984ab70cb9bdcb120","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-2026-104848","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.263Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-552e3a22d70c6697e805354df35e8d72"],"technology":"tinypool","known_exclusions":[],"conditions_summary":"`tinypool` passes worker options to `new Worker()` by reading them off a plain object whose prototype is `Object.prototype`. Options the application did not set are resolved through the prototype chain and then passed explicitly to `worker_threads.Worker`.\n\nNode core ignores `Worker` options inherited from `Object.prototype`. By reading them and passing them explicitly, tinypool re-materialises them as own properties and defeats that protection.\n\n\nTwo keys reach code execution:\n\n1. **`execArgv`** — polluting `Object.prototype.execArgv = ['--require', '/path/to/attacker.js']` causes every pool worker to load the attacker's script.\n2. **`env`** — polluting `Object.prototype.env = { NODE_OPTIONS: '--require /path/to/attacker.js' }` achieves the same via environment injection.\n\n## Root cause\n\n`dist/index.js` lines 508-511:\n\n```js\nenv:            this.options.env,\nargv:           this.options.argv,\nexecArgv:       this.options.execArgv,\nresourceLimits: this.options.resourceLimits,\n```\n\n`this.options` is built at line 470 via object spread:\n\n```js\nthis.options = { ...kDefaultOptions, ...options, filename, maxQueue: 0 };\n```\n\n## Impact\n\nArbitrary code execution inside every worker the poo","public_affected_ranges":["<= 2.1.0"]}],"null_published_at":"2026-11-03T17:49:18.470Z","source_updated_at":"2026-10-05T22:50:02.000Z","source_disclosed_at":"2026-10-05T22:50:01.000Z","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":"2026-11-01T01:39:10.636Z"},{"id":"NVI-00013075","kind":"vulnerability","title":"Tinypool: Prototype Pollution gadget in worker options leads to Remote Code Execution","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-5gmw-xhrv-c9v3","CVE-2026-104848"],"plain_summary":"GitHub lists this reviewed advisory for tinypool. 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-552e3a22d70c6697e805354df35e8d72"],"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-552e3a22d70c6697e805354df35e8d72","url":"https://github.com/advisories/GHSA-5gmw-xhrv-c9v3","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-5gmw-xhrv-c9v3","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T01:39:10.636Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-552e3a22d70c6697e805354df35e8d72"],"technology":"tinypool","known_exclusions":[],"conditions_summary":"`tinypool` passes worker options to `new Worker()` by reading them off a plain object whose prototype is `Object.prototype`. Options the application did not set are resolved through the prototype chain and then passed explicitly to `worker_threads.Worker`.\n\nNode core ignores `Worker` options inherited from `Object.prototype`. By reading them and passing them explicitly, tinypool re-materialises them as own properties and defeats that protection.\n\n\nTwo keys reach code execution:\n\n1. **`execArgv`** — polluting `Object.prototype.execArgv = ['--require', '/path/to/attacker.js']` causes every pool worker to load the attacker's script.\n2. **`env`** — polluting `Object.prototype.env = { NODE_OPTIONS: '--require /path/to/attacker.js' }` achieves the same via environment injection.\n\n## Root cause\n\n`dist/index.js` lines 508-511:\n\n```js\nenv:            this.options.env,\nargv:           this.options.argv,\nexecArgv:       this.options.execArgv,\nresourceLimits: this.options.resourceLimits,\n```\n\n`this.options` is built at line 470 via object spread:\n\n```js\nthis.options = { ...kDefaultOptions, ...options, filename, maxQueue: 0 };\n```\n\n## Impact\n\nArbitrary code execution inside every worker the poo","public_affected_ranges":["<= 2.1.0"]}],"null_published_at":"2026-11-01T07:29:12.915Z","source_updated_at":"2026-10-05T22:50:02.000Z","source_disclosed_at":"2026-10-05T22:50:01.000Z","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":"2026-11-01T01:39:10.636Z"}],"next_cursor":null,"snapshot_revision":"42594"}