{"items":[{"id":"NVI-00007385","kind":"vulnerability","title":"Grav: Stored CSS injection via Markdown image resize() bypasses prior media style sanitizers in Grav","revision":3,"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-ffmg-hfvg-jhg9","CVE-2026-58657"],"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":"The original advisory lists fixed boundaries 2.0.0 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-d9c2b68b2f29ff0b0844d70a1f27859c"],"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},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1cbd18e30a6f42fd78a46816338d2214"],"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":"2026-10-08T16:17:23.383Z","value":"4.8 MEDIUM (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-4be070085ba171ceeadb866ca24d68a1"},{"kind":"CVSS","as_of":"2026-10-08T16:17:23.383Z","value":"4.8 MEDIUM (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-4be070085ba171ceeadb866ca24d68a1"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.267%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.18847. Missing scores are unknown.","source_id":"sr-1cbd18e30a6f42fd78a46816338d2214"}],"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-d9c2b68b2f29ff0b0844d70a1f27859c","url":"https://github.com/advisories/GHSA-ffmg-hfvg-jhg9","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ffmg-hfvg-jhg9","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.403Z"},{"id":"sr-4be070085ba171ceeadb866ca24d68a1","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58657","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-58657","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:39.943Z"},{"id":"sr-1cbd18e30a6f42fd78a46816338d2214","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-2026-58657","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.283Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d9c2b68b2f29ff0b0844d70a1f27859c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"## Summary\n\nGrav 2.0.0-rc.9 and the current 2.0 branch still allow stored CSS injection through Markdown image media actions. The prior media hardening rejects direct `?style=` payloads and unsafe `attribute()` fallbacks, but the adjacent `resize()` action still writes caller-controlled values directly into `styleAttributes`.\n\nA publisher who can edit page Markdown can store a crafted image URL that renders additional CSS declarations in the final `` attribute. This crosses the same lower-privileged publisher to higher-privileged reviewer/admin rendered-content boundary as the earlier media style and attribute advisories.\n\n## Impact\n\nA lower-privileged content editor can persist CSS declarations that are rendered when a higher-privileged user views the page or admin preview. The demonstrated payload creates a full-viewport fixed overlay by injecting `position:fixed`, viewport dimensions, background color, and z-index declarations.\n\nThis does not require JavaScript execution. The impact is stored CSS injection in rendered content, with UI redress/overlay and content-manipulation risk in higher-privileged sessions.\n\n## Reproduction\n\nTested versions:\n\n- Grav 2.0 branch ","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0-rc.9; fixed 2.0.0"]}],"null_published_at":"2026-11-04T18:04:03.120Z","source_updated_at":"2026-09-16T22:30:08.134Z","source_disclosed_at":"2026-09-16T22:14:53.000Z","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":"2026-10-31T21:42:20.403Z"},{"id":"NVI-00007385","kind":"vulnerability","title":"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.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-ffmg-hfvg-jhg9","CVE-2026-58657"],"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":"The original advisory lists fixed boundaries 2.0.0 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-d9c2b68b2f29ff0b0844d70a1f27859c"],"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},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4be070085ba171ceeadb866ca24d68a1"],"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":"2026-10-08T16:17:23.383Z","value":"4.8 MEDIUM (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-4be070085ba171ceeadb866ca24d68a1"},{"kind":"CVSS","as_of":"2026-10-08T16:17:23.383Z","value":"4.8 MEDIUM (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-4be070085ba171ceeadb866ca24d68a1"}],"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-d9c2b68b2f29ff0b0844d70a1f27859c","url":"https://github.com/advisories/GHSA-ffmg-hfvg-jhg9","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ffmg-hfvg-jhg9","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.403Z"},{"id":"sr-4be070085ba171ceeadb866ca24d68a1","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58657","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-58657","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:39.943Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d9c2b68b2f29ff0b0844d70a1f27859c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"## Summary\n\nGrav 2.0.0-rc.9 and the current 2.0 branch still allow stored CSS injection through Markdown image media actions. The prior media hardening rejects direct `?style=` payloads and unsafe `attribute()` fallbacks, but the adjacent `resize()` action still writes caller-controlled values directly into `styleAttributes`.\n\nA publisher who can edit page Markdown can store a crafted image URL that renders additional CSS declarations in the final `` attribute. This crosses the same lower-privileged publisher to higher-privileged reviewer/admin rendered-content boundary as the earlier media style and attribute advisories.\n\n## Impact\n\nA lower-privileged content editor can persist CSS declarations that are rendered when a higher-privileged user views the page or admin preview. The demonstrated payload creates a full-viewport fixed overlay by injecting `position:fixed`, viewport dimensions, background color, and z-index declarations.\n\nThis does not require JavaScript execution. The impact is stored CSS injection in rendered content, with UI redress/overlay and content-manipulation risk in higher-privileged sessions.\n\n## Reproduction\n\nTested versions:\n\n- Grav 2.0 branch ","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0-rc.9; fixed 2.0.0"]}],"null_published_at":"2026-11-01T14:34:07.651Z","source_updated_at":"2026-09-16T22:30:08.134Z","source_disclosed_at":"2026-09-16T22:14:53.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:20.403Z"},{"id":"NVI-00007385","kind":"vulnerability","title":"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":"active","identifiers":["GHSA-ffmg-hfvg-jhg9","CVE-2026-58657"],"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":"The original advisory lists fixed boundaries 2.0.0 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-d9c2b68b2f29ff0b0844d70a1f27859c"],"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":[],"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-d9c2b68b2f29ff0b0844d70a1f27859c","url":"https://github.com/advisories/GHSA-ffmg-hfvg-jhg9","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ffmg-hfvg-jhg9","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.403Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-d9c2b68b2f29ff0b0844d70a1f27859c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"## Summary\n\nGrav 2.0.0-rc.9 and the current 2.0 branch still allow stored CSS injection through Markdown image media actions. The prior media hardening rejects direct `?style=` payloads and unsafe `attribute()` fallbacks, but the adjacent `resize()` action still writes caller-controlled values directly into `styleAttributes`.\n\nA publisher who can edit page Markdown can store a crafted image URL that renders additional CSS declarations in the final `` attribute. This crosses the same lower-privileged publisher to higher-privileged reviewer/admin rendered-content boundary as the earlier media style and attribute advisories.\n\n## Impact\n\nA lower-privileged content editor can persist CSS declarations that are rendered when a higher-privileged user views the page or admin preview. The demonstrated payload creates a full-viewport fixed overlay by injecting `position:fixed`, viewport dimensions, background color, and z-index declarations.\n\nThis does not require JavaScript execution. The impact is stored CSS injection in rendered content, with UI redress/overlay and content-manipulation risk in higher-privileged sessions.\n\n## Reproduction\n\nTested versions:\n\n- Grav 2.0 branch ","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0-rc.9; fixed 2.0.0"]}],"null_published_at":"2026-10-31T22:13:14.335Z","source_updated_at":"2026-09-16T22:30:08.134Z","source_disclosed_at":"2026-09-16T22:14:53.000Z","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":"2026-10-31T21:42:20.403Z"}],"next_cursor":null,"snapshot_revision":"40769"}