{"items":[{"id":"NVI-00008127","kind":"vulnerability","title":"AVideo - Incomplete Fix for CVE-2026-27568: Stored XSS via Markdown `javascript:` URI Bypasses ParsedownSafeWithLinks Sanitization","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-72h5-39r7-r26j","CVE-2026-33500"],"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-064fe08a7073b454571fe84debafa71b"],"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":"2026-11-05T12:03:04.000Z","value":"0.226%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.1342. Missing scores are unknown.","source_id":"sr-064fe08a7073b454571fe84debafa71b"}],"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-f706f78b616b47e8432f9e97f1ca80a9","url":"https://github.com/advisories/GHSA-72h5-39r7-r26j","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-72h5-39r7-r26j","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.942Z"},{"id":"sr-064fe08a7073b454571fe84debafa71b","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-2026-33500","publisher":"FIRST EPSS","observed_at":"2026-11-06T00:24:57.652Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f706f78b616b47e8432f9e97f1ca80a9"],"technology":"wwbn/avideo","known_exclusions":[],"conditions_summary":"## Summary\n\nThe fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom `ParsedownSafeWithLinks` class that sanitizes raw HTML `` and `` tags in comments, but explicitly disables Parsedown's `safeMode`. This creates a bypass: markdown link syntax `text)` is processed by Parsedown's `inlineLink()` method, which does not go through the custom `sanitizeATag()` sanitization (that only handles raw HTML tags). With `safeMode` disabled, Parsedown's built-in `javascript:` URI filtering (`sanitiseElement()`/`filterUnsafeUrlInAttribute()`) is also inactive. An attacker can inject stored XSS via comment markdown links.\n\n## Details\n\nThe original fix (commit `ade348ed6`) enabled `setSafeMode(true)`, which activated Parsedown's built-in URL scheme filtering. This was then replaced by commit `f13587c59` with a custom approach that turned safeMode back off:\n\n**`objects/functionsSecurity.php:442-446` — safeMode disabled:**\n```php\nfunction markDownToHTML($text) {\n    $parsedown = new ParsedownSafeWithLinks();\n    $parsedown->setSafeMode(false);   // line 445 — disables Parsedown's built-in javascript: filtering\n    $parsedown->setMarkupEscaped(false);\n    $html","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 26.0"]}],"null_published_at":"2026-11-07T07:07:46.834Z","source_updated_at":"2026-07-08T08:29:22.541Z","source_disclosed_at":"2026-03-20T20:56:52.000Z","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":"2026-10-31T21:41:59.942Z"},{"id":"NVI-00008127","kind":"vulnerability","title":"AVideo - Incomplete Fix for CVE-2026-27568: Stored XSS via Markdown `javascript:` URI Bypasses ParsedownSafeWithLinks Sanitization","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-72h5-39r7-r26j","CVE-2026-33500"],"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-0963ed5c36ee6cfc76a013bb06698a4d"],"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":"0.226%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13366. Missing scores are unknown.","source_id":"sr-0963ed5c36ee6cfc76a013bb06698a4d"}],"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-f706f78b616b47e8432f9e97f1ca80a9","url":"https://github.com/advisories/GHSA-72h5-39r7-r26j","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-72h5-39r7-r26j","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.942Z"},{"id":"sr-0963ed5c36ee6cfc76a013bb06698a4d","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-2026-33500","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.272Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f706f78b616b47e8432f9e97f1ca80a9"],"technology":"wwbn/avideo","known_exclusions":[],"conditions_summary":"## Summary\n\nThe fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom `ParsedownSafeWithLinks` class that sanitizes raw HTML `` and `` tags in comments, but explicitly disables Parsedown's `safeMode`. This creates a bypass: markdown link syntax `text)` is processed by Parsedown's `inlineLink()` method, which does not go through the custom `sanitizeATag()` sanitization (that only handles raw HTML tags). With `safeMode` disabled, Parsedown's built-in `javascript:` URI filtering (`sanitiseElement()`/`filterUnsafeUrlInAttribute()`) is also inactive. An attacker can inject stored XSS via comment markdown links.\n\n## Details\n\nThe original fix (commit `ade348ed6`) enabled `setSafeMode(true)`, which activated Parsedown's built-in URL scheme filtering. This was then replaced by commit `f13587c59` with a custom approach that turned safeMode back off:\n\n**`objects/functionsSecurity.php:442-446` — safeMode disabled:**\n```php\nfunction markDownToHTML($text) {\n    $parsedown = new ParsedownSafeWithLinks();\n    $parsedown->setSafeMode(false);   // line 445 — disables Parsedown's built-in javascript: filtering\n    $parsedown->setMarkupEscaped(false);\n    $html","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 26.0"]}],"null_published_at":"2026-11-02T20:21:07.837Z","source_updated_at":"2026-07-08T08:29:22.541Z","source_disclosed_at":"2026-03-20T20:56:52.000Z","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":"2026-10-31T21:41:59.942Z"},{"id":"NVI-00008127","kind":"vulnerability","title":"AVideo - Incomplete Fix for CVE-2026-27568: Stored XSS via Markdown `javascript:` URI Bypasses ParsedownSafeWithLinks Sanitization","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-72h5-39r7-r26j","CVE-2026-33500"],"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-4723f6d2f74881d050f5b91cdd0f3b2d"],"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":"2026-10-31T12:00:27.000Z","value":"0.226%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13369. Missing scores are unknown.","source_id":"sr-4723f6d2f74881d050f5b91cdd0f3b2d"}],"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-f706f78b616b47e8432f9e97f1ca80a9","url":"https://github.com/advisories/GHSA-72h5-39r7-r26j","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-72h5-39r7-r26j","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.942Z"},{"id":"sr-4723f6d2f74881d050f5b91cdd0f3b2d","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-2026-33500","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.377Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f706f78b616b47e8432f9e97f1ca80a9"],"technology":"wwbn/avideo","known_exclusions":[],"conditions_summary":"## Summary\n\nThe fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom `ParsedownSafeWithLinks` class that sanitizes raw HTML `` and `` tags in comments, but explicitly disables Parsedown's `safeMode`. This creates a bypass: markdown link syntax `text)` is processed by Parsedown's `inlineLink()` method, which does not go through the custom `sanitizeATag()` sanitization (that only handles raw HTML tags). With `safeMode` disabled, Parsedown's built-in `javascript:` URI filtering (`sanitiseElement()`/`filterUnsafeUrlInAttribute()`) is also inactive. An attacker can inject stored XSS via comment markdown links.\n\n## Details\n\nThe original fix (commit `ade348ed6`) enabled `setSafeMode(true)`, which activated Parsedown's built-in URL scheme filtering. This was then replaced by commit `f13587c59` with a custom approach that turned safeMode back off:\n\n**`objects/functionsSecurity.php:442-446` — safeMode disabled:**\n```php\nfunction markDownToHTML($text) {\n    $parsedown = new ParsedownSafeWithLinks();\n    $parsedown->setSafeMode(false);   // line 445 — disables Parsedown's built-in javascript: filtering\n    $parsedown->setMarkupEscaped(false);\n    $html","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 26.0"]}],"null_published_at":"2026-10-31T23:18:17.238Z","source_updated_at":"2026-07-08T08:29:22.541Z","source_disclosed_at":"2026-03-20T20:56:52.000Z","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":"2026-10-31T21:41:59.942Z"},{"id":"NVI-00008127","kind":"vulnerability","title":"AVideo - Incomplete Fix for CVE-2026-27568: Stored XSS via Markdown `javascript:` URI Bypasses ParsedownSafeWithLinks Sanitization","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-72h5-39r7-r26j","CVE-2026-33500"],"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-f706f78b616b47e8432f9e97f1ca80a9"],"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-f706f78b616b47e8432f9e97f1ca80a9","url":"https://github.com/advisories/GHSA-72h5-39r7-r26j","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-72h5-39r7-r26j","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.942Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-f706f78b616b47e8432f9e97f1ca80a9"],"technology":"wwbn/avideo","known_exclusions":[],"conditions_summary":"## Summary\n\nThe fix for CVE-2026-27568 (GHSA-rcqw-6466-3mv7) introduced a custom `ParsedownSafeWithLinks` class that sanitizes raw HTML `` and `` tags in comments, but explicitly disables Parsedown's `safeMode`. This creates a bypass: markdown link syntax `text)` is processed by Parsedown's `inlineLink()` method, which does not go through the custom `sanitizeATag()` sanitization (that only handles raw HTML tags). With `safeMode` disabled, Parsedown's built-in `javascript:` URI filtering (`sanitiseElement()`/`filterUnsafeUrlInAttribute()`) is also inactive. An attacker can inject stored XSS via comment markdown links.\n\n## Details\n\nThe original fix (commit `ade348ed6`) enabled `setSafeMode(true)`, which activated Parsedown's built-in URL scheme filtering. This was then replaced by commit `f13587c59` with a custom approach that turned safeMode back off:\n\n**`objects/functionsSecurity.php:442-446` — safeMode disabled:**\n```php\nfunction markDownToHTML($text) {\n    $parsedown = new ParsedownSafeWithLinks();\n    $parsedown->setSafeMode(false);   // line 445 — disables Parsedown's built-in javascript: filtering\n    $parsedown->setMarkupEscaped(false);\n    $html","public_affected_ranges":["ECOSYSTEM: introduced 0; last_affected 26.0"]}],"null_published_at":"2026-10-31T22:13:22.831Z","source_updated_at":"2026-07-08T08:29:22.541Z","source_disclosed_at":"2026-03-20T20:56:52.000Z","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":"2026-10-31T21:41:59.942Z"}],"next_cursor":null,"snapshot_revision":"42594"}