CVE-2026-108580
Received Received - Intake

AniWorld Downloader Authentication Bypass via Brute Force

Publication date: 2026-10-10

Last updated on: 2026-10-10

Assigner: VulnCheck

Description
AniWorld Downloader before 5.3.0 contains an improper restriction of authentication attempts vulnerability in the WebUI /login POST handler that allows unauthenticated attackers to guess passwords without throttling. Attackers can enumerate usernames through verify_user response timing and brute-force passwords on exposed WebUI instances to take over accounts.

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Meta Information

Published
2026-10-10
Last Modified
2026-10-10
Generated
2026-10-10
AI Q&A
2026-10-10
EPSS Evaluated
N/A
NVD
CVE-2026-108580
EUVD
EUVD-2026-96363

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
phoenixthrush AniWorld Downloader 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-307 The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.

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Executive Summary

AniWorld Downloader before 5.3.0 has a flaw in its WebUI login system that allows attackers to repeatedly guess passwords without any rate limiting. This means they can try as many password combinations as they want to break into accounts. Attackers can also figure out usernames by timing how long the system takes to respond to login attempts.

Detection Guidance

Check if AniWorld Downloader WebUI is exposed by verifying if the /login endpoint is accessible via curl or browser. Monitor for repeated failed login attempts without delays. Use tools like hydra or burp suite to test for brute-force possibilities on exposed instances.

Impact Analysis

If you run an exposed AniWorld Downloader WebUI instance, attackers could gain unauthorized access to your account by brute-forcing weak passwords. This could lead to loss of control over your account or data, especially if the account has administrative privileges.

Compliance Impact

This vulnerability could potentially violate compliance with GDPR and HIPAA due to unauthorized access risks. GDPR requires protection against unauthorized data access, while HIPAA mandates safeguards for sensitive health information. The lack of rate limiting allows brute-force attacks, increasing the risk of account takeover and unauthorized data exposure.

Mitigation Strategies

Upgrade to AniWorld Downloader version 5.3.0 or later to enable built-in rate limiting. If upgrading is not possible, restrict WebUI access to localhost or trusted networks and implement external rate limiting via reverse proxy or firewall rules.

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