CVE-2026-59816: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in laurent22 joplin
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.
AI Analysis
Technical Summary
CVE-2026-59816 describes a path traversal vulnerability (CWE-22) in Joplin Server's transcription API handlers (GET and POST /api/transcribe/:id) when TRANSCRIBE_ENABLED=true. The server decodes the job ID parameter without proper validation, allowing an authenticated user to include URL-encoded slashes and parent-directory segments. This causes the parseSubPath() function to resolve paths outside the intended /transcribe/ directory prefix. Consequently, the server proxies requests to unintended transcription backend endpoints, potentially exposing sensitive internal data such as administrative, health, or configuration information. The issue is resolved in Joplin Server version 3.7.7.
Potential Impact
An authenticated user can exploit this vulnerability to access internal backend endpoints by bypassing path restrictions, potentially exposing sensitive internal administrative, health, or configuration data. The CVSS score of 4.3 (medium severity) reflects limited confidentiality impact with no integrity or availability impact.
Mitigation Recommendations
Upgrade Joplin Server to version 3.7.7 or later, where this path traversal vulnerability is fixed. No other mitigations are indicated or required by the vendor advisory.
CVE-2026-59816: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in laurent22 joplin
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.
CVSS v3.1
Score 4.3medium
Affected software
laurent22
joplin
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-59816 describes a path traversal vulnerability (CWE-22) in Joplin Server's transcription API handlers (GET and POST /api/transcribe/:id) when TRANSCRIBE_ENABLED=true. The server decodes the job ID parameter without proper validation, allowing an authenticated user to include URL-encoded slashes and parent-directory segments. This causes the parseSubPath() function to resolve paths outside the intended /transcribe/ directory prefix. Consequently, the server proxies requests to unintended transcription backend endpoints, potentially exposing sensitive internal data such as administrative, health, or configuration information. The issue is resolved in Joplin Server version 3.7.7.
Potential Impact
An authenticated user can exploit this vulnerability to access internal backend endpoints by bypassing path restrictions, potentially exposing sensitive internal administrative, health, or configuration data. The CVSS score of 4.3 (medium severity) reflects limited confidentiality impact with no integrity or availability impact.
Mitigation Recommendations
Upgrade Joplin Server to version 3.7.7 or later, where this path traversal vulnerability is fixed. No other mitigations are indicated or required by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-07T15:00:50.978Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab19b5455bf5e2cf57763cd
Added to database: 09/21/2026, 21:02:12 UTC
Last enriched: 09/21/2026, 21:16:58 UTC
Last updated: 09/22/2026, 00:41:59 UTC
Views: 8
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