CVE-2026-111915: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in purocean Yank Note
Description
Yank Note before 3.93.1 contains a path traversal vulnerability that allows unauthenticated remote attackers to read arbitrary files via the path or doc parameter of /api/help. Attackers can supply repeated '../' segments, which bypass the single-replacement sanitization in the publicly allowlisted endpoint, to read SSH keys, configuration, or notes.
CVSS v4.0
Score 8.2high
Affected software
purocean
Yank Note
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-111915 describes a path traversal vulnerability in purocean's Yank Note software prior to version 3.93.1. The vulnerability exists in the /api/help endpoint, which accepts 'path' or 'doc' parameters. Due to improper limitation of pathname inputs, attackers can supply repeated '../' segments to bypass the single-replacement sanitization mechanism. This allows unauthenticated remote attackers to read arbitrary files on the server, potentially exposing sensitive information like SSH keys, configuration files, or notes.
Potential Impact
An unauthenticated remote attacker can exploit this vulnerability to read arbitrary files on the affected system. This can lead to disclosure of sensitive information such as SSH private keys, configuration files, or confidential notes, which may facilitate further attacks or unauthorized access.
Mitigation Recommendations
A fix is available in Yank Note version 3.93.1. Users should upgrade to version 3.93.1 or later to remediate this vulnerability. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-17T12:18:55.462Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad623772cdf04f6565c87f7
Added to database: 10/19/2026, 14:04:39 UTC
Last enriched: 10/19/2026, 14:18:43 UTC
Last updated: 10/19/2026, 17:05:00 UTC
Views: 4
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