CVE-2026-64677

Received Received - Intake

Directory Traversal in Anki Local HTTP Server

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: GitHub, Inc.

Description

Anki is a program for creating and reviewing flashcards. Prior to 25.09.3, endpoints in Anki's local HTTP server do not adequately constrain requested media and built-in data paths, allowing scripts served from shared decks, or malicious websites combined with an origin-check bypass, to read local files through directory traversal. This issue is fixed in version 25.09.3.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-06

Last Modified

2026-08-06

Generated

2026-08-07

AI Q&A

2026-08-07

EPSS Evaluated

N/A

NVD

CVE-2026-64677

Affected Vendors & Products

Vendor	Product	Version / Range
anki	anki	25.09.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

Anki versions before 25.09.3 have a vulnerability in its local HTTP server where endpoints do not properly restrict requested media and built-in data paths. This allows scripts from shared decks or malicious websites to bypass origin checks and read local files via directory traversal.

Detection Guidance

This vulnerability involves directory traversal in Anki's local HTTP server due to insufficient path constraints. To detect it, check if you are running a vulnerable version of Anki (prior to 25.09.3) by running: anki --version. If the version is below 25.09.3, the system is potentially vulnerable.

Impact Analysis

This vulnerability could allow attackers to access sensitive files on your system if you use a vulnerable version of Anki. This includes files stored locally that may contain personal or confidential information.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, potentially violating GDPR or HIPAA requirements for data protection and confidentiality. Organizations may face compliance risks if exploited.

Mitigation Strategies

Upgrade Anki to version 25.09.3 or later immediately. This version addresses the directory traversal issue by properly constraining media and data paths in the local HTTP server.

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