LowVulnerability

CVE-2026-47091: Claude HUD path traversal via transcript_path in stdin JSON

Source: NVD(opens in a new tab)
Identifier: CVE-2026-47091
Published: May 18, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.2%

Summary

CVE-2026-47091 affects Claude HUD through 0.0.12, patched in commit 234d9aa. A path traversal flaw (CWE-22) lets an attacker supply an unvalidated transcript_path value via stdin JSON to read any file the process can read. The file metadata is written to a persistent cache file with insufficient permissions, leaving a record of accessed paths that survives process exit.

Mitigation

Patched in commit 234d9aa.

Details

Scores and exploitation

CVSS score: 3.3(low)
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector: local
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: 0.2%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 12, 2026.
Disclosure date: May 18, 2026

Weaknesses and techniques

Weakness (CWE): CWE-22
Attack pattern (CAPEC): CAPEC-126

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: Plugin
Impact: Confidentiality
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-47091

First tracked: May 18, 2026 at 08:12 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 80% (self-assessed)

Summary

Mitigation

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