{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41418", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-20T15:32:33.813Z", "datePublished": "2026-04-24T18:49:38.599Z", "dateUpdated": "2026-04-24T19:59:10.069Z"}, "containers": {"cna": {"title": "4ga Boards: User Enumeration via Timing Side-Channel in Authentication Endpoint", "problemTypes": [{"descriptions": [{"cweId": "CWE-208", "lang": "en", "description": "CWE-208: Observable Timing Discrepancy", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-8mj9-p99h-jhxp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-8mj9-p99h-jhxp"}], "affected": [{"vendor": "RARgames", "product": "4gaBoards", "versions": [{"version": "< 3.3.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-24T18:49:38.599Z"}, "descriptions": [{"lang": "en", "value": "4ga Boards is a boards system for realtime project management. Prior to 3.3.5, 4ga Boards is vulnerable to user enumeration via a timing side-channel in the login endpoint (POST /api/access-tokens). When an invalid username/email is provided, the server responds immediately (~17ms average). When a valid username/email is provided with an incorrect password, the server first performs a bcrypt.compareSync() operation (~74ms average) before responding. This ~4.4\u00d7 timing difference is trivially detectable even over a network \u2014 a single request suffices. This vulnerability is fixed in 3.3.5."}], "source": {"advisory": "GHSA-8mj9-p99h-jhxp", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-24T19:59:01.749147Z", "id": "CVE-2026-41418", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-24T19:59:10.069Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "4ga Boards is a boards system for realtime project management. Prior to 3.3.5, 4ga Boards is vulnerable to user enumeration via a timing side-channel in the login endpoint (POST /api/access-tokens). When an invalid username/email is provided, the server responds immediately (~17ms average). When a valid username/email is provided with an incorrect password, the server first performs a bcrypt.compareSync() operation (~74ms average) before responding. This ~4.4\u00d7 timing difference is trivially detectable even over a network \u2014 a single request suffices. This vulnerability is fixed in 3.3.5."}], "id": "CVE-2026-41418", "lastModified": "2026-04-27T19:10:45.587", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-24T19:17:13.457", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/RARgames/4gaBoards/security/advisories/GHSA-8mj9-p99h-jhxp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-208"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.3.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "4gaBoards", "source": "cna", "vendor": "RARgames"}, "product": "4gaboards", "vendor": "rargames"}], "analysis": {"en": {"generated_at": "2026-04-28T13:35:58.969482+00:00", "value": {"mitigation_remediation": ["Upgrade the 4ga\u00a0Boards application to version\u00a03.3.5 or later, which removes the timing discrepancy in the POSt\u00a0/api/access\u2011tokens endpoint.", "Implement authentication rate\u2011limiting on the login endpoint to slow repeated probes and reduce the feasibility of timing attacks.", "Configure a short, randomized delay (e.g., 50\u2013100\u202fms) or use a constant\u2011time comparison routine in the authentication logic to equalize response times until the official patch can be applied."], "summary": {"action": "Upgrade", "impact": "User Enumeration via Timing Side-Channel"}, "threat_synthesis": {"affected_systems": "Administrators of RARgames\u00a04ga\u00a0Boards should verify that their installations are running version\u00a03.3.5 or later; prior releases lack the mitigation that removes the timing difference in the authentication endpoint.", "description_and_impact": "The flaw in the POST\u00a0/api/access-tokens endpoint allows an attacker to determine whether a username or e\u2011mail address exists by measuring the response time. An invalid credential triggers an almost instantaneous reply (\u224817\u202fms), whereas a valid username with a wrong password forces a bcrypt.compareSync() operation that takes roughly 74\u202fms, creating a 4.4\u2011fold timing gap that is easily detectable over a network. This timing side\u2011channel falls under CWE\u2011208 and can be exploited with a single request to enumerate valid accounts.", "risk_and_exploitability": "The CVSS score of 5.3 places the vulnerability in the medium severity range. An EPSS score of less than\u00a01\u202f% suggests a low probability of exploitation, and the flaw is not listed in CISA\u2019s KEV catalog. The attack vector is remote over the network: an external actor can simply send a single login request to discover valid accounts, potentially aiding subsequent credential\u2011based attacks."}}}}, "created": "2026-04-27T20:20:40.384964+00:00", "updated": "2026-04-28T13:45:06.133465+00:00", "vendors": ["rargames", "rargames$PRODUCT$4gaboards"]}