{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-34460", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-27T18:18:14.896Z", "datePublished": "2026-06-02T15:29:14.648Z", "dateUpdated": "2026-06-02T17:35:29.044Z"}, "containers": {"cna": {"title": "NamelessMC: OAuth callback `state` is not validated, allowing login CSRF / session swapping", "problemTypes": [{"descriptions": [{"cweId": "CWE-302", "lang": "en", "description": "CWE-302: Authentication Bypass by Assumed-Immutable Data", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-346", "lang": "en", "description": "CWE-346: Origin Validation Error", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-352", "lang": "en", "description": "CWE-352: Cross-Site Request Forgery (CSRF)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6"}], "affected": [{"vendor": "NamelessMC", "product": "Nameless", "versions": [{"version": "< 2.2.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-02T15:29:14.648Z"}, "descriptions": [{"lang": "en", "value": "NamelessMC is website software for Minecraft servers. In versions 2.2.4 and prior, the OAuth callback handling does not validate the state parameter server-side before exchanging the authorization code. This allows an attacker to capture a valid OAuth callback URL for their own account and cause a victim's browser to navigate to it, resulting in the victim's session being authenticated as the attacker-linked account (OAuth login CSRF / session swapping). This is patched in version 2.2.5."}], "source": {"advisory": "GHSA-pmpw-2xvh-5xj6", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/NamelessMC/Nameless/security/advisories/GHSA-pmpw-2xvh-5xj6", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-02T17:35:06.384367Z", "id": "CVE-2026-34460", "options": [{"Exploitation": "poc"}, {"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": "2026-06-02T17:35:29.044Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.2.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Nameless", "source": "cna", "vendor": "NamelessMC"}, "product": "nameless", "vendor": "namelessmc"}], "created": "2026-06-02T16:30:13.008526+00:00", "updated": "2026-06-02T16:30:13.348669+00:00", "vendors": ["namelessmc", "namelessmc$PRODUCT$nameless"]}