{"items":[{"id":"NVI-00010724","kind":"vulnerability","title":"Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-834v-8h66-3h79","CVE-2026-115895"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-3dd5696efa3d242f3c53c6d31d1dd716"],"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 21.0.4 for happy-dom. Confirm the publisher’s latest guidance.","source_ids":["sr-7b51ce5d8239867cd59876daf47f9c74"],"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":"2026-10-23T22:06:14.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-ce543c32fbf57c8c225f4029e49f958b"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.473%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40928. Missing scores are unknown.","source_id":"sr-3dd5696efa3d242f3c53c6d31d1dd716"}],"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-ce543c32fbf57c8c225f4029e49f958b","url":"https://github.com/advisories/GHSA-834v-8h66-3h79","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-834v-8h66-3h79","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-7b51ce5d8239867cd59876daf47f9c74","url":"https://github.com/advisories/GHSA-834v-8h66-3h79","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-834v-8h66-3h79","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-04T10:00:31.594Z"},{"id":"sr-3dd5696efa3d242f3c53c6d31d1dd716","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-2026-115895","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.266Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ce543c32fbf57c8c225f4029e49f958b"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\n\nThe ESM compiler in `happy-dom@20.14.5` does not validate imported local binding aliases before interpolating them into generated JavaScript.\n\nAs a result, an invalid ESM import alias can be transformed into a valid JavaScript destructuring default initializer and executed.\n\nThis appears to be an alternate injection path and incomplete remediation of GHSA-6q6h-j7hj-3r64 / CVE-2026-33943. The previous fix validates `importName` in the local `export { ... }` handler, but the named import handler still places an unvalidated `alias` directly into code context.\n\nThese issues were confirmed through the public `Window` and `` APIs using the published `happy-dom` npm package. The PoC reaches the Node.js host `process`, obtains `node:fs`, and creates a proof directory on the host filesystem.\n\n## Confirmed affected versions\n\nThe PoC was directly tested against:\n\n- `happy-dom@17.0.0`\n- `happy-dom@20.0.0`\n- `happy-dom@20.1.0`\n- `happy-dom@20.14.5`\n\nThe same PoC does not trigger on `happy-dom@16.8.1`.\n\nThe ESM compiler was introduced by commit `7bc831df2`, first released in `v17.0.0`. The vulnerable interpolation remains present through `v20.14.5`, the latest r","public_affected_ranges":[">= 17.0.0, <= 21.0.3"]},{"certainty":"source_listed","source_ids":["sr-7b51ce5d8239867cd59876daf47f9c74"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\n\nThe ESM compiler in `happy-dom@20.14.5` does not validate imported local binding aliases before interpolating them into generated JavaScript.\n\nAs a result, an invalid ESM import alias can be transformed into a valid JavaScript destructuring default initializer and executed.\n\nThis appears to be an alternate injection path and incomplete remediation of GHSA-6q6h-j7hj-3r64 / CVE-2026-33943. The previous fix validates `importName` in the local `export { ... }` handler, but the named import handler still places an unvalidated `alias` directly into code context.\n\nThese issues were confirmed through the public `Window` and `` APIs using the published `happy-dom` npm package. The PoC reaches the Node.js host `process`, obtains `node:fs`, and creates a proof directory on the host filesystem.\n\n## Confirmed affected versions\n\nThe PoC was directly tested against:\n\n- `happy-dom@17.0.0`\n- `happy-dom@20.0.0`\n- `happy-dom@20.1.0`\n- `happy-dom@20.14.5`\n\nThe same PoC does not trigger on `happy-dom@16.8.1`.\n\nThe ESM compiler was introduced by commit `7bc831df2`, first released in `v17.0.0`. The vulnerable interpolation remains present through `v20.14.5`, the latest r","public_affected_ranges":["SEMVER: introduced 17.0.0; fixed 21.0.4"]}],"null_published_at":"2026-11-08T19:53:48.766Z","source_updated_at":"2026-10-23T22:06:14.000Z","source_disclosed_at":"2026-10-23T22:06:13.000Z","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-00010724","kind":"vulnerability","title":"Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-834v-8h66-3h79","CVE-2026-115895"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-28b6cdbafa7461d9fc3a63ba460ff8e5"],"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 21.0.4 for happy-dom. Confirm the publisher’s latest guidance.","source_ids":["sr-7b51ce5d8239867cd59876daf47f9c74"],"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":"2026-10-23T22:06:14.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-ce543c32fbf57c8c225f4029e49f958b"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.473%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40935. Missing scores are unknown.","source_id":"sr-28b6cdbafa7461d9fc3a63ba460ff8e5"}],"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-ce543c32fbf57c8c225f4029e49f958b","url":"https://github.com/advisories/GHSA-834v-8h66-3h79","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-834v-8h66-3h79","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-7b51ce5d8239867cd59876daf47f9c74","url":"https://github.com/advisories/GHSA-834v-8h66-3h79","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-834v-8h66-3h79","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-11-04T10:00:31.594Z"},{"id":"sr-28b6cdbafa7461d9fc3a63ba460ff8e5","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-2026-115895","publisher":"FIRST EPSS","observed_at":"2026-10-31T23:13:27.689Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ce543c32fbf57c8c225f4029e49f958b"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\n\nThe ESM compiler in `happy-dom@20.14.5` does not validate imported local binding aliases before interpolating them into generated JavaScript.\n\nAs a result, an invalid ESM import alias can be transformed into a valid JavaScript destructuring default initializer and executed.\n\nThis appears to be an alternate injection path and incomplete remediation of GHSA-6q6h-j7hj-3r64 / CVE-2026-33943. The previous fix validates `importName` in the local `export { ... }` handler, but the named import handler still places an unvalidated `alias` directly into code context.\n\nThese issues were confirmed through the public `Window` and `` APIs using the published `happy-dom` npm package. The PoC reaches the Node.js host `process`, obtains `node:fs`, and creates a proof directory on the host filesystem.\n\n## Confirmed affected versions\n\nThe PoC was directly tested against:\n\n- `happy-dom@17.0.0`\n- `happy-dom@20.0.0`\n- `happy-dom@20.1.0`\n- `happy-dom@20.14.5`\n\nThe same PoC does not trigger on `happy-dom@16.8.1`.\n\nThe ESM compiler was introduced by commit `7bc831df2`, first released in `v17.0.0`. The vulnerable interpolation remains present through `v20.14.5`, the latest r","public_affected_ranges":[">= 17.0.0, <= 21.0.3"]},{"certainty":"source_listed","source_ids":["sr-7b51ce5d8239867cd59876daf47f9c74"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\n\nThe ESM compiler in `happy-dom@20.14.5` does not validate imported local binding aliases before interpolating them into generated JavaScript.\n\nAs a result, an invalid ESM import alias can be transformed into a valid JavaScript destructuring default initializer and executed.\n\nThis appears to be an alternate injection path and incomplete remediation of GHSA-6q6h-j7hj-3r64 / CVE-2026-33943. The previous fix validates `importName` in the local `export { ... }` handler, but the named import handler still places an unvalidated `alias` directly into code context.\n\nThese issues were confirmed through the public `Window` and `` APIs using the published `happy-dom` npm package. The PoC reaches the Node.js host `process`, obtains `node:fs`, and creates a proof directory on the host filesystem.\n\n## Confirmed affected versions\n\nThe PoC was directly tested against:\n\n- `happy-dom@17.0.0`\n- `happy-dom@20.0.0`\n- `happy-dom@20.1.0`\n- `happy-dom@20.14.5`\n\nThe same PoC does not trigger on `happy-dom@16.8.1`.\n\nThe ESM compiler was introduced by commit `7bc831df2`, first released in `v17.0.0`. The vulnerable interpolation remains present through `v20.14.5`, the latest r","public_affected_ranges":["SEMVER: introduced 17.0.0; fixed 21.0.4"]}],"null_published_at":"2026-11-05T03:52:54.736Z","source_updated_at":"2026-10-23T22:06:14.000Z","source_disclosed_at":"2026-10-23T22:06:13.000Z","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-00010724","kind":"vulnerability","title":"Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-834v-8h66-3h79","CVE-2026-115895"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-28b6cdbafa7461d9fc3a63ba460ff8e5"],"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":"2026-10-23T22:06:14.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-ce543c32fbf57c8c225f4029e49f958b"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.473%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40935. Missing scores are unknown.","source_id":"sr-28b6cdbafa7461d9fc3a63ba460ff8e5"}],"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-ce543c32fbf57c8c225f4029e49f958b","url":"https://github.com/advisories/GHSA-834v-8h66-3h79","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-834v-8h66-3h79","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"},{"id":"sr-28b6cdbafa7461d9fc3a63ba460ff8e5","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-2026-115895","publisher":"FIRST EPSS","observed_at":"2026-10-31T23:13:27.689Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ce543c32fbf57c8c225f4029e49f958b"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\n\nThe ESM compiler in `happy-dom@20.14.5` does not validate imported local binding aliases before interpolating them into generated JavaScript.\n\nAs a result, an invalid ESM import alias can be transformed into a valid JavaScript destructuring default initializer and executed.\n\nThis appears to be an alternate injection path and incomplete remediation of GHSA-6q6h-j7hj-3r64 / CVE-2026-33943. The previous fix validates `importName` in the local `export { ... }` handler, but the named import handler still places an unvalidated `alias` directly into code context.\n\nThese issues were confirmed through the public `Window` and `` APIs using the published `happy-dom` npm package. The PoC reaches the Node.js host `process`, obtains `node:fs`, and creates a proof directory on the host filesystem.\n\n## Confirmed affected versions\n\nThe PoC was directly tested against:\n\n- `happy-dom@17.0.0`\n- `happy-dom@20.0.0`\n- `happy-dom@20.1.0`\n- `happy-dom@20.14.5`\n\nThe same PoC does not trigger on `happy-dom@16.8.1`.\n\nThe ESM compiler was introduced by commit `7bc831df2`, first released in `v17.0.0`. The vulnerable interpolation remains present through `v20.14.5`, the latest r","public_affected_ranges":[">= 17.0.0, <= 21.0.3"]}],"null_published_at":"2026-10-31T23:18:22.442Z","source_updated_at":"2026-10-23T22:06:14.000Z","source_disclosed_at":"2026-10-23T22:06:13.000Z","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-00010724","kind":"vulnerability","title":"Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-834v-8h66-3h79","CVE-2026-115895"],"plain_summary":"GitHub lists this reviewed advisory for happy-dom. 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-ce543c32fbf57c8c225f4029e49f958b"],"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":"2026-10-23T22:06:14.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-ce543c32fbf57c8c225f4029e49f958b"}],"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-ce543c32fbf57c8c225f4029e49f958b","url":"https://github.com/advisories/GHSA-834v-8h66-3h79","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-834v-8h66-3h79","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:08.657Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-ce543c32fbf57c8c225f4029e49f958b"],"technology":"happy-dom","known_exclusions":[],"conditions_summary":"## Summary\n\nThe ESM compiler in `happy-dom@20.14.5` does not validate imported local binding aliases before interpolating them into generated JavaScript.\n\nAs a result, an invalid ESM import alias can be transformed into a valid JavaScript destructuring default initializer and executed.\n\nThis appears to be an alternate injection path and incomplete remediation of GHSA-6q6h-j7hj-3r64 / CVE-2026-33943. The previous fix validates `importName` in the local `export { ... }` handler, but the named import handler still places an unvalidated `alias` directly into code context.\n\nThese issues were confirmed through the public `Window` and `` APIs using the published `happy-dom` npm package. The PoC reaches the Node.js host `process`, obtains `node:fs`, and creates a proof directory on the host filesystem.\n\n## Confirmed affected versions\n\nThe PoC was directly tested against:\n\n- `happy-dom@17.0.0`\n- `happy-dom@20.0.0`\n- `happy-dom@20.1.0`\n- `happy-dom@20.14.5`\n\nThe same PoC does not trigger on `happy-dom@16.8.1`.\n\nThe ESM compiler was introduced by commit `7bc831df2`, first released in `v17.0.0`. The vulnerable interpolation remains present through `v20.14.5`, the latest r","public_affected_ranges":[">= 17.0.0, <= 21.0.3"]}],"null_published_at":"2026-10-31T22:27:12.378Z","source_updated_at":"2026-10-23T22:06:14.000Z","source_disclosed_at":"2026-10-23T22:06:13.000Z","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"}