{"id":"EM-20261103-WKHC","url":"https://cyber.eventmonitor.net/incident/EM-20261103-WKHC/","type":"cve","title":"Claude Code Vulnerability (CVE-2026-88968)","subtitle":"CVE-2026-88968","subject":"CVE-2026-88968","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-03T20:18:19.010Z","firstSignal":"2026-11-03T20:08:47.000Z","lastSignal":"2026-11-03T20:18:19.010Z","updated":"2026-11-04T14:43:58.877Z","revision":1,"life":[{"status":"Born","at":"2026-11-03T20:18:19.010Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-03T20:18:19.010Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-03T20:08:47.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-03T20:18:19.010Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261103-WKHC created."}],"stages":[{"name":"Disclosed","at":"2026-11-03T20:18:19.010Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-03T20:18:19.010Z","detail":"CVSS 7.7 · EPSS 0.3%"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-03T20:08:47.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-03T20:08:47.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-88968 (important)","text":"claude-code: claude-code: Sandbox escape via symlink replacement","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-88968.json"},{"at":"2026-11-03T20:18:19.010Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-88968 (CVSS 7.7)","text":"Claude Code is an agentic coding tool. Prior to 2.1.251, the Edit tool validates a target using pathname and symlink resolution that is not bound to the underlying directory inode or file descriptor. On macOS, attacker-controlled code running in the Bash sandbox can atomically replace an in-workspace parent directory with a symlink after validation, causing the unsandboxed Edit implementation to overwrite a user-writable file outside the workspace. Exploitation requires attacker-controlled code to run inside the sandbox, such as from a malicious repository or dependency script. This issue is f","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88968"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-03T20:18:19.010","score":7.7,"severity":"HIGH","desc":"Claude Code is an agentic coding tool. Prior to 2.1.251, the Edit tool validates a target using pathname and symlink resolution that is not bound to the underlying directory inode or file descriptor. On macOS, attacker-controlled code running in the Bash sandbox can atomically replace an in-workspac","product":"","seen":1793803438877},"kev":null,"epss":{"epss":0.00317,"pct":0.24794,"at":1793803438877},"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}