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.
Metrics
CVSS 3.1 6.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| phoenixthrush | AniWorld Downloader | < 5.3.0 |
References
- https://github.com/phoenixthrush/AniWorld-Downloader/blob/bb13599d17937fdb4df2df699024bc233f0656f2/src/aniworld/web/auth.py#L239-L256
- https://github.com/phoenixthrush/AniWorld-Downloader/commit/3c070bd10665377308a3092e11933681c18a5fd1
- https://github.com/phoenixthrush/AniWorld-Downloader/issues/334
- https://github.com/phoenixthrush/AniWorld-Downloader/releases/tag/v.5.3.0
- https://hackmd.io/@haind/aniworld-login-brute-force
- https://www.vulncheck.com/advisories/aniworld-downloader-before-5.3.0-webui-login-brute-force-via-login
Timeline
- Published
- Oct 10, 2026
- Last modified
- Oct 16, 2026
- NVD status
- Deferred