CVE-2020-26210

{"containers": {"cna": {"affected": [{"product": "BookStack", "vendor": "BookStackApp", "versions": [{"status": "affected", "version": "< 0.30.4"}]}], "descriptions": [{"lang": "en", "value": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, 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 version 0.30.4."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-79", "description": "{\"CWE-79\":\"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\"}", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-11-03T18:20:15.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"}, {"tags": ["x_refsource_MISC"], "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"}], "source": {"advisory": "GHSA-7p2j-4h6p-cq3h", "discovery": "UNKNOWN"}, "title": "Cross-Site Scripting in BookStack", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-26210", "STATE": "PUBLIC", "TITLE": "Cross-Site Scripting in BookStack"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "BookStack", "version": {"version_data": [{"version_value": "< 0.30.4"}]}}]}, "vendor_name": "BookStackApp"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, 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 version 0.30.4."}]}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "{\"CWE-79\":\"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')\"}"}]}]}, "references": {"reference_data": [{"name": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h", "refsource": "CONFIRM", "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"}, {"name": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227", "refsource": "MISC", "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"}, {"name": "https://bookstackapp.com/blog/beta-release-v0-30-4/", "refsource": "MISC", "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"}, {"name": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4", "refsource": "MISC", "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"}]}, "source": {"advisory": "GHSA-7p2j-4h6p-cq3h", "discovery": "UNKNOWN"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:49:07.224Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"}]}]}, "cveMetadata": {"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2020-26210", "datePublished": "2020-11-03T18:20:15.000Z", "dateReserved": "2020-10-01T00:00:00.000Z", "dateUpdated": "2024-08-04T15:49:07.224Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "BookStack", "vendor": "BookStackApp", "versions": [{"status": "affected", "version": "< 0.30.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*", "matchCriteriaId": "D6DF38A5-A44D-4308-933A-A1288591B880", "versionEndExcluding": "0.30.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In BookStack before version 0.30.4, a user with permissions to edit a page could add an attached link which would execute untrusted JavaScript code when clicked by a viewer of the page. Dangerous content may remain in the database after this update. If you think this could have been exploited the linked advisory provides a SQL query to test. As a workaround, 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 version 0.30.4."}, {"lang": "es", "value": "En BookStack anterior a la versi\u00f3n 0.30.4, un usuario con permisos para editar una p\u00e1gina pod\u00eda agregar un enlace adjunto que ejecutar\u00eda c\u00f3digo JavaScript no confiable cuando un visualizador de la p\u00e1gina hiciera clic en \u00e9l.&#xa0;El contenido peligroso puede permanecer en la base de datos despu\u00e9s de esta actualizaci\u00f3n.&#xa0;Si cree que esto podr\u00eda haber sido explotado, el aviso vinculado proporciona una consulta SQL para probar.&#xa0;Como soluci\u00f3n alternativa, los permisos de edici\u00f3n de p\u00e1gina podr\u00edan ser limitados solo para aquellos en los que se conf\u00eda hasta que pueda actualizar, aunque esto no solucionar\u00e1 la explotaci\u00f3n existente de esta vulnerabilidad.&#xa0;El problema se corrigi\u00f3 en la versi\u00f3n 0.30.4"}], "id": "CVE-2020-26210", "lastModified": "2026-06-17T03:07:49.733", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 3.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 6.8, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 5.8, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-11-03T19:15:13.157", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"}, {"source": "security-advisories@github.com", "tags": ["Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://bookstackapp.com/blog/beta-release-v0-30-4/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/commit/349162ea139556b2d25e09e155cec84e21cc9227"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/releases/tag/v0.30.4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/BookStackApp/BookStack/security/advisories/GHSA-7p2j-4h6p-cq3h"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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