{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52893", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-08T21:44:27.366Z", "datePublished": "2026-07-15T21:12:11.088Z", "dateUpdated": "2026-07-18T02:35:24.728Z"}, "containers": {"cna": {"title": "Wekan: OIDC Account Takeover via Unconditional Email-Based Account Merge in onCreateUser hook", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.2, "baseSeverity": "CRITICAL", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/wekan/wekan/security/advisories/GHSA-mp7g-hj5q-gxhq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/wekan/wekan/security/advisories/GHSA-mp7g-hj5q-gxhq"}, {"name": "https://github.com/wekan/wekan/commit/73204d4e0a7d77a1b186b3d76e8eaf2f3e7c9fd9", "tags": ["x_refsource_MISC"], "url": "https://github.com/wekan/wekan/commit/73204d4e0a7d77a1b186b3d76e8eaf2f3e7c9fd9"}, {"name": "https://github.com/wekan/wekan/releases/tag/v9.32", "tags": ["x_refsource_MISC"], "url": "https://github.com/wekan/wekan/releases/tag/v9.32"}], "affected": [{"vendor": "wekan", "product": "wekan", "versions": [{"version": "< 9.32", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-15T21:12:11.088Z"}, "descriptions": [{"lang": "en", "value": "Wekan is open source kanban built with Meteor. Prior to 9.32, the Wekan Accounts.onCreateUser hook in server/models/users.js merges OIDC logins into existing accounts when the OIDC email or username matches an existing Wekan user, without verifying ownership or checking email_verified. An attacker using an OIDC provider account with a victim's email or username can cause Wekan to merge the attacker's OIDC credentials into the victim account and then log in as that account. This issue is fixed in version 9.32."}], "source": {"advisory": "GHSA-mp7g-hj5q-gxhq", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/wekan/wekan/security/advisories/GHSA-mp7g-hj5q-gxhq", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-18T02:34:45.311092Z", "id": "CVE-2026-52893", "options": [{"Exploitation": "poc"}, {"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": "2026-07-18T02:35:24.728Z"}}]}}

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{}

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