{"id":"CVE-2026-67437","state":"PUBLISHED","title":"OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)","description":"OliveTin gives access to predefined shell commands from a web interface. From 3000.0.0 until 3000.17.0, the service/internal/auth/otoauth2/restapi_auth_oauth2.go OAuth2 login handler stores per-login state in the registeredStates map on every /oauth/login request without expiring, deleting, or bounding entries, allowing an unauthenticated attacker to exhaust memory and cause a denial of service. This issue is fixed in version 3000.17.0.","publishedAt":"2026-07-29T20:43:05.167Z","updatedAt":"2026-07-30T14:15:32.590Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["OliveTin OliveTin"],"affected":[{"vendor":"OliveTin","product":"OliveTin","versions":[{"version":">= 3000.0.0, < 3000.17.0","status":"affected"}]}],"references":["https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch","https://github.com/OliveTin/OliveTin/commit/ec114e95d297b806c3ca0c37bc139b3c9c517b3f","https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0"],"weaknesses":["CWE-400","CWE-401","CWE-770"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/67xxx/CVE-2026-67437.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-67437","state":"PUBLISHED","datePublished":"2026-07-29T20:43:05.167Z","dateUpdated":"2026-07-30T14:15:32.590Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-29T15:07:24.991Z"},"containers":{"cna":{"title":"OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)","descriptions":[{"lang":"en","value":"OliveTin gives access to predefined shell commands from a web interface. From 3000.0.0 until 3000.17.0, the service/internal/auth/otoauth2/restapi_auth_oauth2.go OAuth2 login handler stores per-login state in the registeredStates map on every /oauth/login request without expiring, deleting, or bounding entries, allowing an unauthenticated attacker to exhaust memory and cause a denial of service. This issue is fixed in version 3000.17.0."}],"affected":[{"vendor":"OliveTin","product":"OliveTin","versions":[{"version":">= 3000.0.0, < 3000.17.0","status":"affected"}]}],"references":[{"url":"https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch","name":"https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/OliveTin/OliveTin/commit/ec114e95d297b806c3ca0c37bc139b3c9c517b3f","name":"https://github.com/OliveTin/OliveTin/commit/ec114e95d297b806c3ca0c37bc139b3c9c517b3f","tags":["x_refsource_MISC"]},{"url":"https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0","name":"https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-401","lang":"en","description":"CWE-401: Missing Release of Memory after Effective Lifetime","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-29T20:43:05.167Z"},"source":{"advisory":"GHSA-xpxj-f2fm-rqch","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-30T14:15:21.569770Z","id":"CVE-2026-67437","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-30T14:15:32.590Z"}}]}}}