{"items":[{"id":"NVI-00007944","kind":"vulnerability","title":"Duplicate Advisory: Grav: Stored CSS injection via Markdown image resize() bypasses prior media style sanitizers in Grav","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"withdrawn","identifiers":["GHSA-4wj4-79rr-pvff"],"plain_summary":"GitHub lists this reviewed advisory for getgrav/grav. 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-eefab633e191cd0b2e6b7397287991aa"],"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":"2026-09-16T22:14:38.000Z","value":"4.8 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-04277c6d714d745fae62e27c0beca979"}],"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-04277c6d714d745fae62e27c0beca979","url":"https://github.com/advisories/GHSA-4wj4-79rr-pvff","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-4wj4-79rr-pvff","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T19:09:30.244Z"},{"id":"sr-eefab633e191cd0b2e6b7397287991aa","url":"https://github.com/advisories/GHSA-4wj4-79rr-pvff","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4wj4-79rr-pvff","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.674Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-04277c6d714d745fae62e27c0beca979"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-ffmg-hfvg-jhg9. This link is maintained to preserve external references.\n\n### Original Description\nGrav before 2.0.0 (affected through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection vulnerability in the Markdown image resize() media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute() fallbacks, but the resize() action in Excerpts::processMediaActions() writes caller-controlled values directly into the image's styleAttributes. A lower-privileged content editor who can edit page Markdown can store a crafted image URL with semicolon-delimited CSS declarations in the resize parameters, which are rendered into the final  attribute when a higher-privileged reviewer/admin views the page or preview. This does not require JavaScript execution but enables UI redress/overlay and content-manipulation attacks (e.g., a full-viewport fixed overlay). Fixed in 2.0.0.","public_affected_ranges":["= 2.0.0-rc.9"]},{"certainty":"source_listed","source_ids":["sr-eefab633e191cd0b2e6b7397287991aa"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-ffmg-hfvg-jhg9. This link is maintained to preserve external references.\n\n### Original Description\nGrav before 2.0.0 (affected through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection vulnerability in the Markdown image resize() media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute() fallbacks, but the resize() action in Excerpts::processMediaActions() writes caller-controlled values directly into the image's styleAttributes. A lower-privileged content editor who can edit page Markdown can store a crafted image URL with semicolon-delimited CSS declarations in the resize parameters, which are rendered into the final  attribute when a higher-privileged reviewer/admin views the page or preview. This does not require JavaScript execution but enables UI redress/overlay and content-manipulation attacks (e.g., a full-viewport fixed overlay). Fixed in 2.0.0.","public_affected_ranges":[]}],"null_published_at":"2026-11-02T10:00:37.149Z","source_updated_at":"2026-09-16T22:14:38.000Z","source_disclosed_at":"2026-07-08T15:32:01.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.674Z"},{"id":"NVI-00007944","kind":"vulnerability","title":"Duplicate Advisory: Grav: Stored CSS injection via Markdown image resize() bypasses prior media style sanitizers in Grav","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"withdrawn","identifiers":["GHSA-4wj4-79rr-pvff"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. 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-eefab633e191cd0b2e6b7397287991aa"],"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-eefab633e191cd0b2e6b7397287991aa","url":"https://github.com/advisories/GHSA-4wj4-79rr-pvff","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4wj4-79rr-pvff","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.674Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-eefab633e191cd0b2e6b7397287991aa"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-ffmg-hfvg-jhg9. This link is maintained to preserve external references.\n\n### Original Description\nGrav before 2.0.0 (affected through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection vulnerability in the Markdown image resize() media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute() fallbacks, but the resize() action in Excerpts::processMediaActions() writes caller-controlled values directly into the image's styleAttributes. A lower-privileged content editor who can edit page Markdown can store a crafted image URL with semicolon-delimited CSS declarations in the resize parameters, which are rendered into the final  attribute when a higher-privileged reviewer/admin views the page or preview. This does not require JavaScript execution but enables UI redress/overlay and content-manipulation attacks (e.g., a full-viewport fixed overlay). Fixed in 2.0.0.","public_affected_ranges":[]}],"null_published_at":"2026-10-31T22:13:18.642Z","source_updated_at":"2026-09-16T22:30:08.124Z","source_disclosed_at":"2026-07-08T15:32:01.000Z","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":"2026-10-31T21:41:49.674Z"}],"next_cursor":null,"snapshot_revision":"42594"}