{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-90910", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-09-14T10:52:53.687Z", "datePublished": "2026-10-19T09:35:54.679Z", "dateUpdated": "2026-10-19T18:50:42.533Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-19T09:39:10.136Z"}, "title": "Apache Answer: Reaction API authorization bypass for restricted content", "problemTypes": [{"descriptions": [{"description": "CWE-306 Missing authentication for critical function", "lang": "en", "cweId": "CWE-306", "type": "CWE"}]}], "source": {"discovery": "EXTERNAL"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Answer", "packageURL": "pkg:software-id/apache.org/answer", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "2.0.2", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"value": "Missing authentication for critical function vulnerability in Apache Answer.\n\n\n\nThis issue affects Apache Answer: through 2.0.2.\n\n\n\nThe reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted content or add and remove their own reactions.\n\n\n\nUsers are recommended to upgrade to version 2.0.3, which fixes the issue.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Missing authentication for critical function vulnerability in Apache Answer.</p><p>This issue affects Apache Answer: through 2.0.2.</p><p>The reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted content or add and remove their own reactions.</p><p>Users are recommended to upgrade to version 2.0.3, which fixes the issue.</p>"}]}], "references": [{"url": "https://lists.apache.org/thread/bhw80mvmnt9206wyqz80rcbwx1znv1p3", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "moderate"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "Maksim Hayder", "type": "reporter"}], "x_generator": {"engine": "Vulnogram 1.0.3"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/10/16/34"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-19T10:15:05.537Z"}}, {"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-10-19T18:50:33.766805Z", "id": "CVE-2026-90910", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-19T18:50:42.533Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:software-id/apache.org/answer", "product": "Apache Answer", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.0.2", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@apache.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing authentication for critical function vulnerability in Apache Answer.\n\n\n\nThis issue affects Apache Answer: through 2.0.2.\n\n\n\nThe reaction API did not enforce content visibility controls, allowing unauthorized users to read reaction metadata from restricted content or add and remove their own reactions.\n\n\n\nUsers are recommended to upgrade to version 2.0.3, which fixes the issue."}], "id": "CVE-2026-90910", "lastModified": "2026-10-19T11:17:25.597", "metrics": {}, "published": "2026-10-19T10:16:49.897", "references": [{"source": "security@apache.org", "url": "https://lists.apache.org/thread/bhw80mvmnt9206wyqz80rcbwx1znv1p3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/10/16/34"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-306"}], "source": "security@apache.org", "type": "Secondary"}]}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.0.2]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Apache Answer", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "answer", "vendor": "apache"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.0.2]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Apache Answer", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "apache_answer", "vendor": "apache_software_foundation"}], "created": "2026-10-19T11:45:17.164815+00:00", "updated": "2026-10-19T17:00:16.158653+00:00", "vendors": ["apache", "apache$PRODUCT$answer", "apache_software_foundation", "apache_software_foundation$PRODUCT$apache_answer"]}