CVE-2026-18640
NVD: The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOK_EDIT permission to write the notebook record outside the org's data store directory. NVD: The file written must have an extension of ".json.db" but can otherwise overwrite other metadata files (such as ACL records, hunts etc). NVD: This can corrupt these files and cause data corruption.
7.1 Severity
HIGH EPSS
0.0031 (24) KEV
-
Source-published summary
NVD: The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOK_EDIT permission to write the notebook record outside the org's data store directory. NVD: The file written must have an extension of ".json.db" but can otherwise overwrite other metadata files (such as ACL records, hunts etc). NVD: This can corrupt these files and cause data corruption.
Possible impact
Source describes path traversal review · authenticated boundary. Possible impact: An attacker may be able to reach files outside the intended application path.
Affected context
Affected product or version requires source confirmation.
Remediation / advisory
Remediation reference present; patch status requires confirmation in the linked advisory.
Why it matters
Source describes path traversal review · authenticated boundary. Possible impact: An attacker may be able to reach files outside the intended application path.; CVSS 7.1 (HIGH); EPSS percentile 24; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
authenticated boundary
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / OSV description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.