{"id":"CVE-2026-7679","state":"PUBLISHED","title":"YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication","description":"A security flaw has been discovered in YunaiV yudao-cloud up to 2026.01. This impacts the function getAccessToken of the file yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java. Performing a manipulation results in improper authentication. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor explains: \"[W]e intentionally retain the existing generic compatibility path that accepts a valid, unexpired stored refresh token when an access-token lookup is unavailable, for integrations such as reports and WebSocket. We are not introducing strict access-token-only verification, new revocation behavior or a separate trusted-entry API. This is a retained compatibility decision, not a claim that this behavior follows the standard OAuth separation or that every identity/revocation scenario has been eliminated.\"","publishedAt":"2026-05-03T04:15:10.929Z","updatedAt":"2026-10-27T07:22:32.665Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["YunaiV yudao-cloud"],"affected":[{"vendor":"YunaiV","product":"yudao-cloud","versions":[{"version":"2026.01","status":"affected"}],"cpes":["cpe:2.3:a:yunaiv:yudao-cloud:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/vuln/360832","https://vuldb.com/vuln/360832/cti","https://vuldb.com/cve/CVE-2026-7679","https://vuldb.com/submit/800866","https://github.com/9str0IL/CVE/issues/1"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/7xxx/CVE-2026-7679.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7679","state":"PUBLISHED","datePublished":"2026-05-03T04:15:10.929Z","dateUpdated":"2026-10-27T07:22:32.665Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-05-02T08:39:00.470Z"},"containers":{"cna":{"title":"YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication","descriptions":[{"lang":"en","value":"A security flaw has been discovered in YunaiV yudao-cloud up to 2026.01. This impacts the function getAccessToken of the file yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java. Performing a manipulation results in improper authentication. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor explains: \"[W]e intentionally retain the existing generic compatibility path that accepts a valid, unexpired stored refresh token when an access-token lookup is unavailable, for integrations such as reports and WebSocket. We are not introducing strict access-token-only verification, new revocation behavior or a separate trusted-entry API. 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