CVE-2026-67437

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{"dataType": "CVE_RECORD", "containers": {"cna": {"title": "OliveTin: Unauthenticated DoS via OAuth2 State Memory Exhaustion (Unbounded Map Growth)", "source": {"advisory": "GHSA-xpxj-f2fm-rqch", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "OliveTin", "product": "OliveTin", "versions": [{"status": "affected", "version": ">= 3000.0.0, < 3000.17.0"}]}], "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"]}], "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400: Uncontrolled Resource Consumption"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-401", "description": "CWE-401: Missing Release of Memory after Effective Lifetime"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-770", "description": "CWE-770: Allocation of Resources Without Limits or Throttling"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-29T20:43:05.167Z"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-67437", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-30T14:15:21.569770Z"}}}], "references": [{"url": "https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch", "tags": ["exploit"]}], "providerMetadata": {"shortName": "CISA-ADP", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "dateUpdated": "2026-07-30T14:14:52.728Z"}}]}, "cveMetadata": {"cveId": "CVE-2026-67437", "state": "PUBLISHED", "dateUpdated": "2026-07-29T20:43:05.167Z", "dateReserved": "2026-07-29T15:07:24.991Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-07-29T20:43:05.167Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "OliveTin", "vendor": "OliveTin", "versions": [{"status": "affected", "version": ">= 3000.0.0, < 3000.17.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-67437", "lastModified": "2026-07-30T19:21:23.297", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-67437", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-30T14:15:21.569770Z", "version": "2.0.3"}}]}, "published": "2026-07-29T21:17:47.977", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OliveTin/OliveTin/commit/ec114e95d297b806c3ca0c37bc139b3c9c517b3f"}, {"source": "security-advisories@github.com", "url": "https://github.com/OliveTin/OliveTin/releases/tag/3000.17.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/OliveTin/OliveTin/security/advisories/GHSA-xpxj-f2fm-rqch"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-401"}, {"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3000.0.0,3000.17.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "OliveTin", "source": "cna", "vendor": "OliveTin"}, "product": "olivetin", "vendor": "olivetin"}], "created": "2026-07-29T22:30:04.646709+00:00", "updated": "2026-08-02T07:45:03.687791+00:00", "vendors": ["olivetin", "olivetin$PRODUCT$olivetin"]}