{"items":[{"id":"NVI-00016368","kind":"vulnerability","title":"changedetection.io is vulnerable to unauthenticated static path traversal","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-9jj8-v89v-xjvw","CVE-2026-25527"],"plain_summary":"GitHub lists this reviewed advisory for changedetection.io. 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-1c28e6ed0aeead1c25a4d5ad56415a6d"],"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":"2026-07-20T19:06:58.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6b80a1436a56cf22c0a788e23a84ca35"},{"kind":"CVSS","as_of":"2026-06-17T10:24:47.783Z","value":"5.3 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-1c28e6ed0aeead1c25a4d5ad56415a6d"}],"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-6b80a1436a56cf22c0a788e23a84ca35","url":"https://github.com/advisories/GHSA-9jj8-v89v-xjvw","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9jj8-v89v-xjvw","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:49:06.528Z"},{"id":"sr-1c28e6ed0aeead1c25a4d5ad56415a6d","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25527","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-25527","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-07T13:57:30.282Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6b80a1436a56cf22c0a788e23a84ca35"],"technology":"changedetection.io","known_exclusions":[],"conditions_summary":"## Summary\nThe `/static//` route accepts `group=\"..\"`, which causes `send_from_directory(\"static/..\", filename)` to execute. This moves the base directory up to `/app/changedetectionio`, enabling **unauthenticated local file read** of application source files (e.g., `flask_app.py`). Severity is **low information disclosure (C:L)**.\n\n### Details\nThe vulnerable code is in `changedetectionio/flask_app.py` inside `static_content()`:\n\n```\ngroup = re.sub(r'[^\\w.-]+', '', group.lower())\nfilename = re.sub(r'[^\\w.-]+', '', filename.lower())\n...\nreturn send_from_directory(f\"static/{group}\", path=filename)\n```\n\nThe `group` sanitization allows dots, so `group=\"..\"` passes validation.  \nThis results in `send_from_directory(\"static/..\", filename)`, effectively shifting the base directory to `/app/changedetectionio` and allowing reads of files in that directory.  \nThe route is unauthenticated, so **any user can retrieve source files** without logging in.\n\n> Limitation: the route only matches `/static//` and rejects slashes inside `filename`, so it cannot traverse further to arbitrary system paths like `/etc/passwd`. It is limited to files inside the application p","public_affected_ranges":["< 0.53.2"]}],"null_published_at":"2026-11-07T18:43:12.071Z","source_updated_at":"2026-07-20T19:06:58.000Z","source_disclosed_at":"2026-07-20T19:06:55.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-04T02:49:06.528Z"},{"id":"NVI-00016368","kind":"vulnerability","title":"changedetection.io is vulnerable to unauthenticated static path traversal","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9jj8-v89v-xjvw","CVE-2026-25527"],"plain_summary":"GitHub lists this reviewed advisory for changedetection.io. 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-6b80a1436a56cf22c0a788e23a84ca35"],"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":"2026-07-20T19:06:58.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-6b80a1436a56cf22c0a788e23a84ca35"}],"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-6b80a1436a56cf22c0a788e23a84ca35","url":"https://github.com/advisories/GHSA-9jj8-v89v-xjvw","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9jj8-v89v-xjvw","publisher":"GitHub Advisory Database","observed_at":"2026-11-04T02:49:06.528Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-6b80a1436a56cf22c0a788e23a84ca35"],"technology":"changedetection.io","known_exclusions":[],"conditions_summary":"## Summary\nThe `/static//` route accepts `group=\"..\"`, which causes `send_from_directory(\"static/..\", filename)` to execute. This moves the base directory up to `/app/changedetectionio`, enabling **unauthenticated local file read** of application source files (e.g., `flask_app.py`). Severity is **low information disclosure (C:L)**.\n\n### Details\nThe vulnerable code is in `changedetectionio/flask_app.py` inside `static_content()`:\n\n```\ngroup = re.sub(r'[^\\w.-]+', '', group.lower())\nfilename = re.sub(r'[^\\w.-]+', '', filename.lower())\n...\nreturn send_from_directory(f\"static/{group}\", path=filename)\n```\n\nThe `group` sanitization allows dots, so `group=\"..\"` passes validation.  \nThis results in `send_from_directory(\"static/..\", filename)`, effectively shifting the base directory to `/app/changedetectionio` and allowing reads of files in that directory.  \nThe route is unauthenticated, so **any user can retrieve source files** without logging in.\n\n> Limitation: the route only matches `/static//` and rejects slashes inside `filename`, so it cannot traverse further to arbitrary system paths like `/etc/passwd`. It is limited to files inside the application p","public_affected_ranges":["< 0.53.2"]}],"null_published_at":"2026-11-04T10:04:27.936Z","source_updated_at":"2026-07-20T19:06:58.000Z","source_disclosed_at":"2026-07-20T19:06:55.000Z","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":"2026-11-04T02:49:06.528Z"}],"next_cursor":null,"snapshot_revision":"42594"}