HIGHCVSS v4 7.7Vulnerability
CVE-2026-88968
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 fixed in version 2.1.251.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-03T21:24:30.963596+00:00
- Cvss severity
- HIGH
- Cvss score
- 7.7
- Retrieved at
- 2026-11-03T21:25:36+00:00
- Score
- 7.7
- Cvss version
- 4.0
- Last source
- NVD
- Cve id
- CVE-2026-88968
- Cvss vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- First seen by Signal
- 2026-11-03T21:21:12+00:00
- Vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Published at
- 2026-11-03T20:18:19.010
- Last modified
- 2026-11-03T20:33:04.080
Related Entities (2)
HAS_WEAKNESS (2)
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