CVE-2026-111915

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.

References

• https://github.com/purocean/yn/blob/v3.93.0/src/main/server/index.ts
• https://github.com/purocean/yn/commit/d3b0ad27f7f6388b878eefd828557ae2d2a8789b
• https://github.com/purocean/yn/issues/543
• https://github.com/purocean/yn/releases/tag/v3.93.1
• https://www.vulncheck.com/advisories/yank-note-before-3.93.1-path-traversal-via-api-help-endpoint