CVE-2026-46690

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46690", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-15T21:46:51.548Z", "datePublished": "2026-06-12T14:56:10.356Z", "dateUpdated": "2026-06-12T15:54:30.265Z"}, "containers": {"cna": {"title": "unbounded-spsc: Sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-415", "lang": "en", "description": "CWE-415: Double Free", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-704", "lang": "en", "description": "CWE-704: Incorrect Type Conversion or Cast", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6"}], "affected": [{"vendor": "spearman", "product": "unbounded-spsc", "versions": [{"version": "<= 0.2.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-12T14:56:10.356Z"}, "descriptions": [{"lang": "en", "value": "unbounded_spsc is an \"unbounded\" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches."}], "source": {"advisory": "GHSA-6m57-8r3p-pqx6", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-12T15:54:19.131542Z", "id": "CVE-2026-46690", "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": "2026-06-12T15:54:30.265Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46690", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-12T15:54:19.131542Z"}}}], "references": [{"url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-12T15:53:25.480Z"}}], "cna": {"title": "unbounded-spsc: Sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race", "source": {"advisory": "GHSA-6m57-8r3p-pqx6", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.8, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "spearman", "product": "unbounded-spsc", "versions": [{"status": "affected", "version": "<= 0.2.0"}]}], "references": [{"url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6", "name": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "unbounded_spsc is an \"unbounded\" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125: Out-of-bounds Read"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-415", "description": "CWE-415: Double Free"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-704", "description": "CWE-704: Incorrect Type Conversion or Cast"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "CWE-787: Out-of-bounds Write"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-12T14:56:10.356Z"}}}, "cveMetadata": {"cveId": "CVE-2026-46690", "state": "PUBLISHED", "dateUpdated": "2026-06-12T15:54:30.265Z", "dateReserved": "2026-05-15T21:46:51.548Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-12T14:56:10.356Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "unbounded-spsc", "vendor": "spearman", "versions": [{"status": "affected", "version": "<= 0.2.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:spearman:unbounded-spsc:*:*:*:*:*:*:*:*", "matchCriteriaId": "12D12A50-936D-46B8-9903-2A8A1420AB07", "versionEndIncluding": "0.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "unbounded_spsc is an \"unbounded\" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches."}, {"lang": "es", "value": "unbounded_spsc es una \u2019ilimitada\u2019 extensi\u00f3n de bounded_spsc_queue. En las versiones 0.2.0 y anteriores, la transmutaci\u00f3n de puntero como valor de sender::send causa una lectura OOB y una liberaci\u00f3n de Arc falso bajo una condici\u00f3n de carrera TX/RX. En el momento de la publicaci\u00f3n, no hay parches disponibles p\u00fablicamente."}], "id": "CVE-2026-46690", "lastModified": "2026-10-26T11:10:00.157", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 4.7, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46690", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-12T15:54:19.131542Z", "version": "2.0.3"}}]}, "published": "2026-06-12T16:16:29.197", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/spearman/unbounded-spsc/security/advisories/GHSA-6m57-8r3p-pqx6"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-415"}, {"lang": "en", "value": "CWE-704"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.2.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "unbounded-spsc", "source": "cna", "vendor": "spearman"}, "product": "unbounded-spsc", "vendor": "spearman"}], "created": "2026-06-12T18:30:32.142954+00:00", "updated": "2026-06-12T20:20:02.336501+00:00", "vendors": ["spearman", "spearman$PRODUCT$unbounded-spsc"]}