What’s Vulnerable › Vulnerabilities

CVE-2026-59816: Joplin: Path traversal in transcribe proxy endpoint via URL-encoded slash

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-21 · updated 2026-09-23
• Weakness: CWE-22

Description

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.7, the GET /api/transcribe/:id and POST /api/transcribe/:id handlers in packages/server/src/routes/api/transcribe.ts on Joplin Server instances with TRANSCRIBE_ENABLED=true pass the decoded id directly into transcription backend URLs. An authenticated user can place URL-encoded slash and parent-directory segments in the job ID, causing parseSubPath() to decode a path that escapes the intended /transcribe/ prefix. The server then proxies the request to other transcription-backend endpoints and can return their responses, potentially exposing internal administrative, health, or configuration data. This issue is fixed in version 3.7.7.

Affected products

• laurent22 joplin: before 3.7.7

References

• https://github.com/laurent22/joplin/commit/d97a5091a35c2923984d3777320500b594afcdce
• https://github.com/laurent22/joplin/security/advisories/GHSA-r7wp-3494-fwf4
• https://github.com/laurent22/joplin/security/advisories/GHSA-r7wp-3494-fwf4

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