Path Traversal in Purocean Yank Note
CVE-2026-111915
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/purocean/yn/issues/543 (issue-tracking)
- github.com/purocean/yn/commit/d3b0ad27f7f6388b878eefd828557ae2d2a8789b (patch)
- github.com/purocean/yn/blob/v3.93.0/src/main/server/index.ts (technical-description)
- github.com/purocean/yn/releases/tag/v3.93.1 (release-notes)
- www.vulncheck.com/advisories/yank-note-before-3.93.1-path-traversal-via-api-hel… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111915?
- CVE-2026-111915 is a medium-severity vulnerability in Purocean Yank Note, classified under Path Traversal. CVSS score: 5.9/10. Published 2026-10-19.
- How severe is CVE-2026-111915?
- Medium severity. CVSS v3 base score is 5.9 out of 10.