{"items":[{"id":"NVI-00006686","kind":"vulnerability","title":"Winter: Stored XSS through Backend List widget image columns","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-7mpf-4465-7fc2"],"plain_summary":"OSV carries this publisher advisory for winter/wn-backend-module. 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 1.2.14 for winter/wn-backend-module. Confirm the publisher’s latest guidance.","source_ids":["sr-beb62fc4b3bd1e47c7941cbf4e0f5bb8"],"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-beb62fc4b3bd1e47c7941cbf4e0f5bb8","url":"https://github.com/advisories/GHSA-7mpf-4465-7fc2","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-7mpf-4465-7fc2","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:59.952Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-beb62fc4b3bd1e47c7941cbf4e0f5bb8"],"technology":"winter/wn-backend-module","known_exclusions":[],"conditions_summary":"### Impact\n\n`Backend\\Widgets\\Lists::evalImageTypeValue()` interpolated the resolved image URL into a single-quoted `src` attribute without escaping it. Where a list column of type `image` rendered an attacker-influenced value, that value could break out of the attribute and inject arbitrary attributes — including event handlers — into the backend list, executing in the session of whichever backend user viewed it.\n\nWinter core ships no `image` list column, so a default installation is unaffected. Exploitation requires a plugin that renders attacker-influenced values through one.\n\nThe supported image sources are plugins, themes, the Media Library, the uploads directory, and `Attach\\File` models; an arbitrary external URL is not among them. `ImageResizer::filterGetUrl()` returns the value it was given when it cannot resolve an image, however, so an unsupported value reached the attribute verbatim rather than being rejected.\n\nAs with previous issues of this kind the severity is limited: an attacker must already be able to store the value, and a b","public_affected_ranges":["ECOSYSTEM: introduced 1.1.0; fixed 1.2.14"]}],"null_published_at":"2026-10-31T22:13:10.068Z","source_updated_at":"2026-08-20T19:00:07.478Z","source_disclosed_at":"2026-08-20T18:44:41.000Z","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":"2026-10-31T21:41:59.952Z"}],"next_cursor":null,"snapshot_revision":"42594"}