CVE-2026-42564: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in fccview jotty
CVE-2026-42564 is a path traversal vulnerability in jotty, a self-hosted checklist and notes app by fccview. Versions prior to 1. 22. 0 allow unauthenticated attackers to read arbitrary files outside the intended directory via the /api/app-icons/[filename] endpoint. This occurs because the filename parameter is used to construct filesystem paths without proper validation. The vulnerability has a high severity with a CVSS score of 8. 2. It is fixed in version 1. 22. 0.
AI Analysis
Technical Summary
The vulnerability in jotty (versions before 1.22.0) involves improper limitation of a pathname to a restricted directory (CWE-22). The /api/app-icons/[filename] endpoint accepts a filename parameter that is concatenated into a filesystem path without validating or sanitizing for path traversal sequences. This allows an unauthenticated attacker to read files outside the intended data/uploads/app-icons/ directory, leading to potential exposure of sensitive files. The issue is addressed in version 1.22.0 of jotty.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to read arbitrary files on the server hosting jotty, potentially exposing sensitive information. The confidentiality impact is high, while integrity impact is low and availability is not affected. No known exploits in the wild have been reported.
Mitigation Recommendations
This vulnerability is fixed in jotty version 1.22.0. Users should upgrade to version 1.22.0 or later to remediate the issue. Since the vendor advisory indicates the fix is available in this version, applying the official update is the recommended mitigation.
CVE-2026-42564: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in fccview jotty
Description
CVE-2026-42564 is a path traversal vulnerability in jotty, a self-hosted checklist and notes app by fccview. Versions prior to 1. 22. 0 allow unauthenticated attackers to read arbitrary files outside the intended directory via the /api/app-icons/[filename] endpoint. This occurs because the filename parameter is used to construct filesystem paths without proper validation. The vulnerability has a high severity with a CVSS score of 8. 2. It is fixed in version 1. 22. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in jotty (versions before 1.22.0) involves improper limitation of a pathname to a restricted directory (CWE-22). The /api/app-icons/[filename] endpoint accepts a filename parameter that is concatenated into a filesystem path without validating or sanitizing for path traversal sequences. This allows an unauthenticated attacker to read files outside the intended data/uploads/app-icons/ directory, leading to potential exposure of sensitive files. The issue is addressed in version 1.22.0 of jotty.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to read arbitrary files on the server hosting jotty, potentially exposing sensitive information. The confidentiality impact is high, while integrity impact is low and availability is not affected. No known exploits in the wild have been reported.
Mitigation Recommendations
This vulnerability is fixed in jotty version 1.22.0. Users should upgrade to version 1.22.0 or later to remediate the issue. Since the vendor advisory indicates the fix is available in this version, applying the official update is the recommended mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-28T17:26:12.084Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a028746cbff5d86108b50dc
Added to database: 5/12/2026, 1:49:58 AM
Last enriched: 5/12/2026, 1:52:48 AM
Last updated: 5/12/2026, 3:48:35 AM
Views: 2
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