{"items":[{"id":"NVI-00002414","kind":"vulnerability","title":"WWBN AVideo's GIF poster fetch bypasses traversal scrubbing and exposes local files through public media URLs","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-f4f9-627c-jh33","CVE-2026-39369"],"plain_summary":"OSV carries this publisher advisory for WWBN/AVideo. This is an aggregated source copy; consult the original publisher and compare update dates.","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-9e0eaf3b3cb9956c792ff17063bfd49d"],"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":"2026-07-24T21:10:00.143Z","value":"7.6 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-9e0eaf3b3cb9956c792ff17063bfd49d"}],"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-177aa650eda5b3f52262b07a584cbb6f","url":"https://github.com/advisories/GHSA-f4f9-627c-jh33","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-f4f9-627c-jh33","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.708Z"},{"id":"sr-9e0eaf3b3cb9956c792ff17063bfd49d","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39369","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-39369","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:23:52.242Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-177aa650eda5b3f52262b07a584cbb6f"],"technology":"WWBN/AVideo","known_exclusions":[],"conditions_summary":"## Summary\n\n`objects/aVideoEncoderReceiveImage.json.php` allowed an authenticated uploader to fetch attacker-controlled same-origin `/videos/...` URLs, bypass traversal scrubbing, and expose server-local files through the GIF poster storage path.\n\nThe vulnerable GIF branch could be abused to read local files such as `/etc/passwd` or application source files and republish those bytes through a normal public GIF media URL.\n\n## Details\n\nThe vulnerable chain was:\n\n1. `objects/aVideoEncoderReceiveImage.json.php` accepted attacker-controlled `downloadURL_gifimage`\n2. traversal scrubbing used `str_replace('../', '', ...)`, which was bypassable with overlapping input such as `....//`\n3. same-origin `/videos/...` URLs were accepted\n4. `url_get_contents()` and `try_get_contents_from_local()` resolved the request into a local filesystem read\n5. the fetched bytes were written into the GIF destination\n6. invalid GIF cleanup used the wrong variable, so the non-image payload remained on disk\n\nThis made the GIF poster path a local file disclosure primitive with public retrieval.\n\n## Proof of concept\n\n1. Log in as an uploader and create an owned video row through the normal encoder flow.\n2. Send:\n\n","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 26.0"]}],"null_published_at":"2026-11-06T15:18:11.514Z","source_updated_at":"2026-09-10T03:50:44.094Z","source_disclosed_at":"2026-04-08T00:08:44.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.708Z"},{"id":"NVI-00002414","kind":"vulnerability","title":"WWBN AVideo's GIF poster fetch bypasses traversal scrubbing and exposes local files through public media URLs","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f4f9-627c-jh33","CVE-2026-39369"],"plain_summary":"OSV carries this publisher advisory for WWBN/AVideo. This is an aggregated source copy; consult the original publisher and compare update dates.","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-177aa650eda5b3f52262b07a584cbb6f"],"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-177aa650eda5b3f52262b07a584cbb6f","url":"https://github.com/advisories/GHSA-f4f9-627c-jh33","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-f4f9-627c-jh33","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.708Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-177aa650eda5b3f52262b07a584cbb6f"],"technology":"WWBN/AVideo","known_exclusions":[],"conditions_summary":"## Summary\n\n`objects/aVideoEncoderReceiveImage.json.php` allowed an authenticated uploader to fetch attacker-controlled same-origin `/videos/...` URLs, bypass traversal scrubbing, and expose server-local files through the GIF poster storage path.\n\nThe vulnerable GIF branch could be abused to read local files such as `/etc/passwd` or application source files and republish those bytes through a normal public GIF media URL.\n\n## Details\n\nThe vulnerable chain was:\n\n1. `objects/aVideoEncoderReceiveImage.json.php` accepted attacker-controlled `downloadURL_gifimage`\n2. traversal scrubbing used `str_replace('../', '', ...)`, which was bypassable with overlapping input such as `....//`\n3. same-origin `/videos/...` URLs were accepted\n4. `url_get_contents()` and `try_get_contents_from_local()` resolved the request into a local filesystem read\n5. the fetched bytes were written into the GIF destination\n6. invalid GIF cleanup used the wrong variable, so the non-image payload remained on disk\n\nThis made the GIF poster path a local file disclosure primitive with public retrieval.\n\n## Proof of concept\n\n1. Log in as an uploader and create an owned video row through the normal encoder flow.\n2. Send:\n\n","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 26.0"]}],"null_published_at":"2026-10-31T22:00:33.881Z","source_updated_at":"2026-09-10T03:50:44.094Z","source_disclosed_at":"2026-04-08T00:08:44.000Z","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":"2026-10-31T21:42:10.708Z"}],"next_cursor":null,"snapshot_revision":"42594"}