{"id":"CVE-2026-48911","state":"PUBLISHED","title":"Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow","description":"Insufficient Verification of Data Authenticity vulnerability in Apache Answer.\n\nThis issue affects Apache Answer: through 2.0.1.\n\nA missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user accounts by tricking victims into clicking a crafted confirmation link.\nUsers are recommended to upgrade to version 2.0.2, which fixes the issue.","publishedAt":"2026-08-05T15:09:14.961Z","updatedAt":"2026-08-06T14:37:06.522Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Answer"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Answer","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.0.1","versionType":"semver"}]}],"references":["https://lists.apache.org/thread/mrlwtdnhqqgfbchjgq6rffkz67o8wyv8","http://www.openwall.com/lists/oss-security/2026/08/05/10"],"weaknesses":["CWE-306"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/48xxx/CVE-2026-48911.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48911","state":"PUBLISHED","datePublished":"2026-08-05T15:09:14.961Z","dateUpdated":"2026-08-06T14:37:06.522Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-05-26T11:10:37.350Z"},"containers":{"cna":{"title":"Apache Answer: Unauthenticated OAuth Email-Binding Account Takeover via Existing User Confirmation Flow","descriptions":[{"lang":"en","value":"Insufficient Verification of Data Authenticity vulnerability in Apache Answer.\n\nThis issue affects Apache Answer: through 2.0.1.\n\nA missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user accounts by tricking victims into clicking a crafted confirmation link.\nUsers are recommended to upgrade to version 2.0.2, which fixes the issue."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Answer","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.0.1","versionType":"semver"}]}],"references":[{"url":"https://lists.apache.org/thread/mrlwtdnhqqgfbchjgq6rffkz67o8wyv8","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"moderate"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","description":"CWE-306 Missing Authentication for Critical Function","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-08-05T15:09:14.961Z"},"credits":[{"lang":"en","type":"reporter","value":"tonghuaroot"},{"lang":"en","type":"reporter","value":"yangxi"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/08/05/10"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-08-05T16:32:55.117Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-08-06T14:36:44.730618Z","id":"CVE-2026-48911","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-06T14:37:06.522Z"}}]}}}