{"items":[{"id":"NVI-00007007","kind":"vulnerability","title":"Bookstack Cross-site Scripting vulnerability","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-ch37-ch8w-cfrq","CVE-2020-26211"],"plain_summary":"OSV carries this publisher advisory for ssddanbrown/bookstack. 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 0.30.4 for ssddanbrown/bookstack. Confirm the publisher’s latest guidance.","source_ids":["sr-cb15261301b2a32b49c26a606d4b3eb2"],"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-be93c505fb8dc481bf98a558d012c35f"],"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":"2026-06-17T03:07:49.867Z","value":"3.5 LOW (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-11e07ca783e1766cd8914ca991cf6ec8"},{"kind":"CVSS","as_of":"2026-06-17T03:07:49.867Z","value":"7.7 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-11e07ca783e1766cd8914ca991cf6ec8"},{"kind":"CVSS","as_of":"2026-06-17T03:07:49.867Z","value":"8.7 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-11e07ca783e1766cd8914ca991cf6ec8"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"1.096%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.65576. Missing scores are unknown.","source_id":"sr-be93c505fb8dc481bf98a558d012c35f"}],"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-cb15261301b2a32b49c26a606d4b3eb2","url":"https://github.com/advisories/GHSA-ch37-ch8w-cfrq","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ch37-ch8w-cfrq","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.700Z"},{"id":"sr-11e07ca783e1766cd8914ca991cf6ec8","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26211","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-26211","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T22:07:13.751Z"},{"id":"sr-be93c505fb8dc481bf98a558d012c35f","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-2020-26211","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-cb15261301b2a32b49c26a606d4b3eb2"],"technology":"ssddanbrown/bookstack","known_exclusions":[],"conditions_summary":"In BookStack before version 0.30.4, a user with permissions to edit a page could insert JavaScript code through the use of `javascript:` URIs within a link or form which would run, within the context of the current page, when clicked or submitted. Additionally, a user with permissions to edit a page could insert a particular meta tag which could be used to silently redirect users to a alternative location upon visit of a page. Dangerous content may remain in the database but will be removed before being displayed on a page. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround without upgrading, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in BookStack version 0.30.4.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 0.30.4"]}],"null_published_at":"2026-11-06T21:03:48.000Z","source_updated_at":"2026-09-10T03:49:22.170Z","source_disclosed_at":"2022-05-24T17:32:59.000Z","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":"2026-10-31T21:42:10.700Z"},{"id":"NVI-00007007","kind":"vulnerability","title":"Bookstack Cross-site Scripting vulnerability","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-ch37-ch8w-cfrq","CVE-2020-26211"],"plain_summary":"OSV carries this publisher advisory for ssddanbrown/bookstack. 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 0.30.4 for ssddanbrown/bookstack. Confirm the publisher’s latest guidance.","source_ids":["sr-cb15261301b2a32b49c26a606d4b3eb2"],"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-11e07ca783e1766cd8914ca991cf6ec8"],"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":"2026-06-17T03:07:49.867Z","value":"3.5 LOW (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-11e07ca783e1766cd8914ca991cf6ec8"},{"kind":"CVSS","as_of":"2026-06-17T03:07:49.867Z","value":"7.7 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-11e07ca783e1766cd8914ca991cf6ec8"},{"kind":"CVSS","as_of":"2026-06-17T03:07:49.867Z","value":"8.7 HIGH (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-11e07ca783e1766cd8914ca991cf6ec8"}],"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-cb15261301b2a32b49c26a606d4b3eb2","url":"https://github.com/advisories/GHSA-ch37-ch8w-cfrq","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ch37-ch8w-cfrq","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.700Z"},{"id":"sr-11e07ca783e1766cd8914ca991cf6ec8","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26211","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-26211","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T22:07:13.751Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-cb15261301b2a32b49c26a606d4b3eb2"],"technology":"ssddanbrown/bookstack","known_exclusions":[],"conditions_summary":"In BookStack before version 0.30.4, a user with permissions to edit a page could insert JavaScript code through the use of `javascript:` URIs within a link or form which would run, within the context of the current page, when clicked or submitted. Additionally, a user with permissions to edit a page could insert a particular meta tag which could be used to silently redirect users to a alternative location upon visit of a page. Dangerous content may remain in the database but will be removed before being displayed on a page. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround without upgrading, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in BookStack version 0.30.4.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 0.30.4"]}],"null_published_at":"2026-10-31T22:27:03.539Z","source_updated_at":"2026-09-10T03:49:22.170Z","source_disclosed_at":"2022-05-24T17:32:59.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.700Z"},{"id":"NVI-00007007","kind":"vulnerability","title":"Bookstack Cross-site Scripting vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-ch37-ch8w-cfrq","CVE-2020-26211"],"plain_summary":"OSV carries this publisher advisory for ssddanbrown/bookstack. 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 0.30.4 for ssddanbrown/bookstack. Confirm the publisher’s latest guidance.","source_ids":["sr-cb15261301b2a32b49c26a606d4b3eb2"],"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-cb15261301b2a32b49c26a606d4b3eb2","url":"https://github.com/advisories/GHSA-ch37-ch8w-cfrq","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-ch37-ch8w-cfrq","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.700Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-cb15261301b2a32b49c26a606d4b3eb2"],"technology":"ssddanbrown/bookstack","known_exclusions":[],"conditions_summary":"In BookStack before version 0.30.4, a user with permissions to edit a page could insert JavaScript code through the use of `javascript:` URIs within a link or form which would run, within the context of the current page, when clicked or submitted. Additionally, a user with permissions to edit a page could insert a particular meta tag which could be used to silently redirect users to a alternative location upon visit of a page. Dangerous content may remain in the database but will be removed before being displayed on a page. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround without upgrading, page edit permissions could be limited to only those that are trusted until you can upgrade although this will not address existing exploitation of this vulnerability. The issue is fixed in BookStack version 0.30.4.","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 0.30.4"]}],"null_published_at":"2026-10-31T22:13:14.307Z","source_updated_at":"2026-09-10T03:49:22.170Z","source_disclosed_at":"2022-05-24T17:32:59.000Z","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":"2026-10-31T21:42:10.700Z"}],"next_cursor":null,"snapshot_revision":"42594"}