{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46406", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T21:04:10.932Z", "datePublished": "2026-06-29T14:03:14.683Z", "dateUpdated": "2026-06-29T15:26:11.153Z"}, "containers": {"cna": {"title": "Claude Code: Insecure Temporary File in /copy Command Enables Response Disclosure and Symlink-Based File Write", "problemTypes": [{"descriptions": [{"cweId": "CWE-59", "lang": "en", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-377", "lang": "en", "description": "CWE-377: Insecure Temporary File", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/anthropics/claude-code/security/advisories/GHSA-4vp2-6q8c-pvq2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/anthropics/claude-code/security/advisories/GHSA-4vp2-6q8c-pvq2"}], "affected": [{"vendor": "anthropics", "product": "claude-code", "versions": [{"version": ">= 2.1.59, < 2.1.128", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-29T14:03:14.683Z"}, "descriptions": [{"lang": "en", "value": "Claude Code is an agentic coding tool. From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128."}], "source": {"advisory": "GHSA-4vp2-6q8c-pvq2", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-29T15:25:46.123210Z", "id": "CVE-2026-46406", "options": [{"Exploitation": "none"}, {"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": "2026-06-29T15:26:11.153Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-46406", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-13T21:04:10.932Z", "datePublished": "2026-06-29T14:03:14.683Z", "dateUpdated": "2026-06-29T15:26:11.153Z"}, "containers": {"cna": {"title": "Claude Code: Insecure Temporary File in /copy Command Enables Response Disclosure and Symlink-Based File Write", "problemTypes": [{"descriptions": [{"cweId": "CWE-59", "lang": "en", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-200", "lang": "en", "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-377", "lang": "en", "description": "CWE-377: Insecure Temporary File", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/anthropics/claude-code/security/advisories/GHSA-4vp2-6q8c-pvq2", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/anthropics/claude-code/security/advisories/GHSA-4vp2-6q8c-pvq2"}], "affected": [{"vendor": "anthropics", "product": "claude-code", "versions": [{"version": ">= 2.1.59, < 2.1.128", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-29T14:03:14.683Z"}, "descriptions": [{"lang": "en", "value": "Claude Code is an agentic coding tool. From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128."}], "source": {"advisory": "GHSA-4vp2-6q8c-pvq2", "discovery": "UNKNOWN"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-46406", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-29T15:25:46.123210Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-29T15:25:57.936Z"}}]}}

{}

{}

{"created": "2026-06-29T16:30:17.092911+00:00", "updated": "2026-06-29T16:30:17.092917+00:00", "vendors": []}