Brute force login in AniWorld Downloader WebUI via /login
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-307.
Summary
AniWorld Downloader before 5.3.0 lets unauthenticated remote attackers guess passwords on its WebUI /login handler because it does not restrict failed authentication attempts (CWE-307). Attackers can also enumerate usernames through response timing in verify_user, and brute-force passwords on exposed WebUI instances to take over accounts.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| phoenixthrush | AniWorld Downloader | before 5.3.0 | 5.3.0 | Patch available | CNA |
- AniWorld Downloader Vendorphoenixthrush Affected before 5.3.0 Fixed in 5.3.0 Patch available CNA
Remediation
AniWorld Downloader users should upgrade to version 5.3.0.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA AniWorld Downloader (phoenixthrush) Fixed in 5.3.0
Timeline
- 2026-10-11 Threatist record created from CVE-2026-108580
- 2026-10-11 Alias added: GHSA-cwhp-rxhr-43pp
- 2026-10-11 Priority changed: MEDIUM → LOW
- 2026-10-13 CISA SSVC decision points changed
References
Patch 1
Sources
- CVE-2026-108580 · CVE Program
- CVE-2026-108580 · NVD
- FIRST EPSS
- GHSA-cwhp-rxhr-43pp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences