{"id":"CVE-2026-24052","state":"PUBLISHED","title":"Claude Code has a Domain Validation Bypass which Allows Automatic Requests to Attacker-Controlled Domains","description":"Claude Code is an agentic coding tool. Prior to version 1.0.111, Claude Code contained insufficient URL validation in its trusted domain verification mechanism for WebFetch requests. The application used a startsWith() function to validate trusted domains (e.g., docs.python.org, modelcontextprotocol.io), this could have enabled attackers to register domains like modelcontextprotocol.io.example.com that would pass validation. This could enable automatic requests to attacker-controlled domains without user consent, potentially leading to data exfiltration. This issue has been patched in version 1.0.111.","publishedAt":"2026-02-03T20:49:41.997Z","updatedAt":"2026-02-04T20:00:11.786Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["anthropics claude-code"],"affected":[{"vendor":"anthropics","product":"claude-code","versions":[{"version":"< 1.0.111","status":"affected"}]}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-vhw5-3g5m-8ggf"],"weaknesses":["CWE-601"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/24xxx/CVE-2026-24052.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-24052","state":"PUBLISHED","datePublished":"2026-02-03T20:49:41.997Z","dateUpdated":"2026-02-04T20:00:11.786Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-20T22:30:11.778Z"},"containers":{"cna":{"title":"Claude Code has a Domain Validation Bypass which Allows Automatic Requests to Attacker-Controlled Domains","descriptions":[{"lang":"en","value":"Claude Code is an agentic coding tool. Prior to version 1.0.111, Claude Code contained insufficient URL validation in its trusted domain verification mechanism for WebFetch requests. The application used a startsWith() function to validate trusted domains (e.g., docs.python.org, modelcontextprotocol.io), this could have enabled attackers to register domains like modelcontextprotocol.io.example.com that would pass validation. This could enable automatic requests to attacker-controlled domains without user consent, potentially leading to data exfiltration. This issue has been patched in version 1.0.111."}],"affected":[{"vendor":"anthropics","product":"claude-code","versions":[{"version":"< 1.0.111","status":"affected"}]}],"references":[{"url":"https://github.com/anthropics/claude-code/security/advisories/GHSA-vhw5-3g5m-8ggf","name":"https://github.com/anthropics/claude-code/security/advisories/GHSA-vhw5-3g5m-8ggf","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-601","lang":"en","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-03T20:49:41.997Z"},"source":{"advisory":"GHSA-vhw5-3g5m-8ggf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-04T20:00:03.072035Z","id":"CVE-2026-24052","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-04T20:00:11.786Z"}}]}}}