{"items":[{"id":"NVI-00015032","kind":"vulnerability","title":"Quasar: Prototype pollution in the extend() utility","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-3r53-75j5-3g7j","CVE-2026-73647"],"plain_summary":"GitHub lists this reviewed advisory for quasar. 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-12f46e15e5ab450ec53ee72fd3ecdc50"],"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":"2026-08-13T17:57:16.000Z","value":"5.6 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0c61581fed8163f39790942af0b34307"},{"kind":"CVSS","as_of":"2026-10-24T15:10:00.190Z","value":"5.6 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-12f46e15e5ab450ec53ee72fd3ecdc50"}],"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-0c61581fed8163f39790942af0b34307","url":"https://github.com/advisories/GHSA-3r53-75j5-3g7j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3r53-75j5-3g7j","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"},{"id":"sr-12f46e15e5ab450ec53ee72fd3ecdc50","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73647","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-73647","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T19:45:24.870Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0c61581fed8163f39790942af0b34307"],"technology":"quasar","known_exclusions":[],"conditions_summary":"### Summary\n\n`quasar@2.20.1`, the latest published version at the time of testing, appears to be vulnerable to prototype pollution through the public `extend()` utility exported from the package root.\n\nWhen `extend(true, target, source)` is used for a deep merge, attacker-controlled object keys are recursively copied into the target object without blocking prototype-pollution primitives such as `__proto__`, `constructor`, or `prototype`.\n\nThis can allow attacker-controlled properties to be written to `Object.prototype`.\n\n### Details\n\nAffected source:\n\n```text\nsrc/utils/extend/extend.js\n```\n\nDistributed files include:\n\n```text\ndist/quasar.server.prod.js\ndist/quasar.server.prod.cjs\ndist/quasar.client.js\n```\n\nThe package root publicly exports `extend`. During deep merge, source object keys are recursively assigned into the target object. If the source object contains an own `__proto__` property, the merge can descend into the prototype object and assign attacker-controlled properties onto `Object.prototype`.\n\n### PoC\n\n```bash\nrm -rf /tmp/quasar-extend-pp-poc\nmkdir /tmp/quasar-extend-pp-poc\ncd /tmp/quasar-extend-pp-poc\n\nnpm init -y >/dev/null\nnpm install quasar@2.20.1 vue@3.5.31 >/dev/","public_affected_ranges":["<= 2.21.4"]}],"null_published_at":"2026-11-08T19:53:44.027Z","source_updated_at":"2026-08-13T17:57:16.000Z","source_disclosed_at":"2026-07-24T22:36:45.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-02T20:16:47.162Z"},{"id":"NVI-00015032","kind":"vulnerability","title":"Quasar: Prototype pollution in the extend() utility","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3r53-75j5-3g7j","CVE-2026-73647"],"plain_summary":"GitHub lists this reviewed advisory for quasar. 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-0c61581fed8163f39790942af0b34307"],"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":"2026-08-13T17:57:16.000Z","value":"5.6 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0c61581fed8163f39790942af0b34307"}],"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-0c61581fed8163f39790942af0b34307","url":"https://github.com/advisories/GHSA-3r53-75j5-3g7j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3r53-75j5-3g7j","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0c61581fed8163f39790942af0b34307"],"technology":"quasar","known_exclusions":[],"conditions_summary":"### Summary\n\n`quasar@2.20.1`, the latest published version at the time of testing, appears to be vulnerable to prototype pollution through the public `extend()` utility exported from the package root.\n\nWhen `extend(true, target, source)` is used for a deep merge, attacker-controlled object keys are recursively copied into the target object without blocking prototype-pollution primitives such as `__proto__`, `constructor`, or `prototype`.\n\nThis can allow attacker-controlled properties to be written to `Object.prototype`.\n\n### Details\n\nAffected source:\n\n```text\nsrc/utils/extend/extend.js\n```\n\nDistributed files include:\n\n```text\ndist/quasar.server.prod.js\ndist/quasar.server.prod.cjs\ndist/quasar.client.js\n```\n\nThe package root publicly exports `extend`. During deep merge, source object keys are recursively assigned into the target object. If the source object contains an own `__proto__` property, the merge can descend into the prototype object and assign attacker-controlled properties onto `Object.prototype`.\n\n### PoC\n\n```bash\nrm -rf /tmp/quasar-extend-pp-poc\nmkdir /tmp/quasar-extend-pp-poc\ncd /tmp/quasar-extend-pp-poc\n\nnpm init -y >/dev/null\nnpm install quasar@2.20.1 vue@3.5.31 >/dev/","public_affected_ranges":["<= 2.21.4"]}],"null_published_at":"2026-11-03T10:03:26.537Z","source_updated_at":"2026-08-13T17:57:16.000Z","source_disclosed_at":"2026-07-24T22:36:45.000Z","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":"2026-11-02T20:16:47.162Z"}],"next_cursor":null,"snapshot_revision":"42594"}