{"items":[{"id":"NVI-00001914","kind":"vulnerability","title":"mediawiki/maps has stored XSS through the overlays parameter in the display_map parser function","revision":5,"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-4h7g-5542-v3fc","CVE-2026-52854"],"plain_summary":"OSV carries this publisher advisory for mediawiki/maps. 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 12.1.3 for mediawiki/maps. Confirm the publisher’s latest guidance.","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"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-0250693d89961ff61ecefa000c5485da"],"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":"2026-10-22T17:09:59.477Z","value":"8.6 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-b8c4f12e502db80f577c8ee433609986"},{"kind":"EPSS","as_of":"2026-11-06T12:00:23.000Z","value":"0.578%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.47758. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-52854","publisher":"FIRST EPSS","observed_at":"2026-11-07T00:50:47.037Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"technology":"mediawiki/maps","known_exclusions":[],"conditions_summary":"### Summary\nStored XSS through wikitext can be performed by inserting malicious HTML into the `overlays` parameter of the `display_map` parser function when using the leaflet service.\n\n### Details\nThe maps extension doesn't escape overlay names before passing them to leaflet.\nLeaflet then inserts them as HTML: https://github.com/ProfessionalWiki/Maps/blob/ca5139fabd75f3c34f47ea3fd161306506b053bc/resources/lib/leaflet/leaflet.js#L5243\n\n### PoC\nPreview the following wikitext, using the default configuration options of the extension:\n```\n{{#display_map:0,0|service=leaflet|overlays=OpenTopoMap.}}\n```\n\n### Impact\nStored XSS can be performed by any user with the `edit` permission.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 12.1.3"]}],"null_published_at":"2026-11-07T22:29:26.084Z","source_updated_at":"2026-09-10T03:51:10.324Z","source_disclosed_at":"2026-07-02T17:51:24.000Z","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":"2026-10-31T21:41:49.669Z"},{"id":"NVI-00001914","kind":"vulnerability","title":"mediawiki/maps has stored XSS through the overlays parameter in the display_map parser function","revision":4,"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-4h7g-5542-v3fc","CVE-2026-52854"],"plain_summary":"OSV carries this publisher advisory for mediawiki/maps. 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 12.1.3 for mediawiki/maps. Confirm the publisher’s latest guidance.","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"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-20fffe18b0f00062268d94b7f44d538e"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-52854","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.856Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"technology":"mediawiki/maps","known_exclusions":[],"conditions_summary":"### Summary\nStored XSS through wikitext can be performed by inserting malicious HTML into the `overlays` parameter of the `display_map` parser function when using the leaflet service.\n\n### Details\nThe maps extension doesn't escape overlay names before passing them to leaflet.\nLeaflet then inserts them as HTML: https://github.com/ProfessionalWiki/Maps/blob/ca5139fabd75f3c34f47ea3fd161306506b053bc/resources/lib/leaflet/leaflet.js#L5243\n\n### PoC\nPreview the following wikitext, using the default configuration options of the extension:\n```\n{{#display_map:0,0|service=leaflet|overlays=OpenTopoMap.}}\n```\n\n### Impact\nStored XSS can be performed by any user with the `edit` permission.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 12.1.3"]}],"null_published_at":"2026-11-07T14:01:58.736Z","source_updated_at":"2026-09-10T03:51:10.324Z","source_disclosed_at":"2026-07-02T17:51:24.000Z","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":"2026-10-31T21:41:49.669Z"},{"id":"NVI-00001914","kind":"vulnerability","title":"mediawiki/maps has stored XSS through the overlays parameter in the display_map parser function","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-4h7g-5542-v3fc","CVE-2026-52854"],"plain_summary":"OSV carries this publisher advisory for mediawiki/maps. 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 12.1.3 for mediawiki/maps. Confirm the publisher’s latest guidance.","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"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-95bdd3e175f0cfbc77a09b2b738a526e"],"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":"2026-10-22T17:09:59.477Z","value":"8.6 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-b8c4f12e502db80f577c8ee433609986"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.578%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.47592. Missing scores are unknown.","source_id":"sr-95bdd3e175f0cfbc77a09b2b738a526e"}],"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-04eea67d52d38801b0c932c2d00fbb8a","url":"https://github.com/advisories/GHSA-4h7g-5542-v3fc","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4h7g-5542-v3fc","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.669Z"},{"id":"sr-b8c4f12e502db80f577c8ee433609986","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-52854","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-52854","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:31.710Z"},{"id":"sr-95bdd3e175f0cfbc77a09b2b738a526e","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-2026-52854","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"technology":"mediawiki/maps","known_exclusions":[],"conditions_summary":"### Summary\nStored XSS through wikitext can be performed by inserting malicious HTML into the `overlays` parameter of the `display_map` parser function when using the leaflet service.\n\n### Details\nThe maps extension doesn't escape overlay names before passing them to leaflet.\nLeaflet then inserts them as HTML: https://github.com/ProfessionalWiki/Maps/blob/ca5139fabd75f3c34f47ea3fd161306506b053bc/resources/lib/leaflet/leaflet.js#L5243\n\n### PoC\nPreview the following wikitext, using the default configuration options of the extension:\n```\n{{#display_map:0,0|service=leaflet|overlays=OpenTopoMap.}}\n```\n\n### Impact\nStored XSS can be performed by any user with the `edit` permission.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 12.1.3"]}],"null_published_at":"2026-11-06T15:18:17.697Z","source_updated_at":"2026-09-10T03:51:10.324Z","source_disclosed_at":"2026-07-02T17:51:24.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.669Z"},{"id":"NVI-00001914","kind":"vulnerability","title":"mediawiki/maps has stored XSS through the overlays parameter in the display_map parser function","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4h7g-5542-v3fc","CVE-2026-52854"],"plain_summary":"OSV carries this publisher advisory for mediawiki/maps. 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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":"0.578%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.47592. Missing scores are unknown.","source_id":"sr-95bdd3e175f0cfbc77a09b2b738a526e"}],"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-04eea67d52d38801b0c932c2d00fbb8a","url":"https://github.com/advisories/GHSA-4h7g-5542-v3fc","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4h7g-5542-v3fc","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.669Z"},{"id":"sr-95bdd3e175f0cfbc77a09b2b738a526e","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-2026-52854","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.382Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"technology":"mediawiki/maps","known_exclusions":[],"conditions_summary":"### Summary\nStored XSS through wikitext can be performed by inserting malicious HTML into the `overlays` parameter of the `display_map` parser function when using the leaflet service.\n\n### Details\nThe maps extension doesn't escape overlay names before passing them to leaflet.\nLeaflet then inserts them as HTML: https://github.com/ProfessionalWiki/Maps/blob/ca5139fabd75f3c34f47ea3fd161306506b053bc/resources/lib/leaflet/leaflet.js#L5243\n\n### PoC\nPreview the following wikitext, using the default configuration options of the extension:\n```\n{{#display_map:0,0|service=leaflet|overlays=OpenTopoMap.}}\n```\n\n### Impact\nStored XSS can be performed by any user with the `edit` permission.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 12.1.3"]}],"null_published_at":"2026-11-04T02:53:03.149Z","source_updated_at":"2026-09-10T03:51:10.324Z","source_disclosed_at":"2026-07-02T17:51:24.000Z","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":"2026-10-31T21:41:49.669Z"},{"id":"NVI-00001914","kind":"vulnerability","title":"mediawiki/maps has stored XSS through the overlays parameter in the display_map parser function","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4h7g-5542-v3fc","CVE-2026-52854"],"plain_summary":"OSV carries this publisher advisory for mediawiki/maps. 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 12.1.3 for mediawiki/maps. Confirm the publisher’s latest guidance.","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"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-04eea67d52d38801b0c932c2d00fbb8a","url":"https://github.com/advisories/GHSA-4h7g-5542-v3fc","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4h7g-5542-v3fc","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.669Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-04eea67d52d38801b0c932c2d00fbb8a"],"technology":"mediawiki/maps","known_exclusions":[],"conditions_summary":"### Summary\nStored XSS through wikitext can be performed by inserting malicious HTML into the `overlays` parameter of the `display_map` parser function when using the leaflet service.\n\n### Details\nThe maps extension doesn't escape overlay names before passing them to leaflet.\nLeaflet then inserts them as HTML: https://github.com/ProfessionalWiki/Maps/blob/ca5139fabd75f3c34f47ea3fd161306506b053bc/resources/lib/leaflet/leaflet.js#L5243\n\n### PoC\nPreview the following wikitext, using the default configuration options of the extension:\n```\n{{#display_map:0,0|service=leaflet|overlays=OpenTopoMap.}}\n```\n\n### Impact\nStored XSS can be performed by any user with the `edit` permission.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 12.1.3"]}],"null_published_at":"2026-10-31T21:53:28.058Z","source_updated_at":"2026-09-10T03:51:10.324Z","source_disclosed_at":"2026-07-02T17:51:24.000Z","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":"2026-10-31T21:41:49.669Z"}],"next_cursor":null,"snapshot_revision":"42594"}