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blinko

Blinko is an AI-powered card note-taking project. Prior to version 1.8.4, there is an authenticated arbitrary file write vulnerability in saveAdditionalDevFile. This issue has been patched in version 1.8.4.

CVE-2026-23481 identifies a path traversal vulnerability classified under CWE-22 in the Blinko application developed by blinkospace. Blinko is an AI-powered card note-taking tool used for organizing and managing notes. The vulnerability exists in versions prior to 1.8.4 within the saveAdditionalDevFile function, which improperly restricts pathname inputs. This flaw allows an authenticated user with limited privileges to write arbitrary files to locations outside the designated directory structure. The vulnerability arises because the application fails to adequately sanitize or validate file path inputs, enabling directory traversal sequences (e.g., '../') to escape the intended directory boundaries. Exploiting this vulnerability could allow an attacker to overwrite critical files, inject malicious code, or alter application behavior, thereby compromising system integrity and potentially confidentiality. The CVSS 4.0 base score is 5.3 (medium severity), reflecting network attack vector, low attack complexity, no user interaction, and limited privileges required. No known public exploits have been reported, and the issue was reserved in January 2026 and published in March 2026. The vendor has addressed this vulnerability in version 1.8.4 by implementing proper path validation and restrictions to prevent arbitrary file writes outside the allowed directories.

Detailed information about CVE-2026-23481: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in blinkospace blinko affectin

CVE-2026-23481: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in blinkospace blinko - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2026-23481: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in blinkospace blinko

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