CVE-2026-62323

{"id": "CVE-2026-62323", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62323", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-31T19:27:35.115914Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 4.2, "exploitabilityScore": 2.1}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "cloudreve", "product": "cloudreve", "versions": [{"status": "affected", "version": "< 4.17.0"}]}]}], "published": "2026-07-31T04:17:24.160", "references": [{"url": "https://github.com/cloudreve/cloudreve/commit/f3347130ac48f2ff996af9ef66c97be2dda9cba9", "source": "security-advisories@github.com"}, {"url": "https://github.com/cloudreve/cloudreve/releases/tag/4.17.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp", "source": "security-advisories@github.com"}, {"url": "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-c3jm-gv5r-9wcp", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, ViewerSessionValidation uses only the session-id prefix of a WOPI access token and does not enforce the requested viewer action, allowing a malicious or compromised WOPI viewer with a view session to forge the token suffix and invoke WOPI write routes for the underlying file. This issue is fixed in version 4.17.0."}], "lastModified": "2026-09-08T20:51:43.490", "sourceIdentifier": "security-advisories@github.com"}