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.
CVE-2026-108580
MEDIUMPre-NVD 6.56.5
EchelonGraph scoreLOW confidence
This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 6.5Exploit: None knownExposed services: Not assessed
A fix is available — apply it.
- CVSS v3
- 6.5
- EG Score
- 6.5MEDIUMlow confidence
- EG Risk
- 34EG Risk 34/100CISA SSVC
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity65% × 45%Exploitation0% × 40%Automatability30% × 15%CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table
Published
October 10, 2026
Last Modified
October 10, 2026
Advisory Details (6)
Auto-updated Oct 10, 2026Patch available. Sources: github_commit, github_release.
generic
AniWorld Downloader before 5.3.0 WebUI Login Brute Force via /login | Advisories | VulnCheck
https://www.vulncheck.com/advisories/aniworld-downloader-before-5.3.0-webui-login-brute-force-via-logingeneric
AniWorld-Downloader/src/aniworld/web/auth.py at bb13599d17937fdb4df2df699024bc233f0656f2 · phoenixthrush/AniWorld-Downloader · GitHub
https://github.com/phoenixthrush/AniWorld-Downloader/blob/bb13599d17937fdb4df2df699024bc233f0656f2/src/aniworld/web/auth.py#L239-L256generic
AniWorld Downloader WebUI login has no rate limit, so an exposed instance allows unlimited password guesses - HackMD
https://hackmd.io/@haind/aniworld-login-brute-forcegithub_release Patch Available
v.5.3.0
Patch available: phoenixthrush/AniWorld-Downloader v.5.3.0
https://github.com/phoenixthrush/AniWorld-Downloader/releases/tag/v.5.3.0github_commit Patch Available
commit 3c070bd10665 (phoenixthrush/AniWorld-Downloader)
Patch available: phoenixthrush/AniWorld-Downloader v.5.3.0 (contains commit 3c070bd10665)
https://github.com/phoenixthrush/AniWorld-Downloader/commit/3c070bd10665377308a3092e11933681c18a5fd1generic
Add rate limiting to basic webui auth · Issue #334 · phoenixthrush/AniWorld-Downloader · GitHub
https://github.com/phoenixthrush/AniWorld-Downloader/issues/334Vendor Advisories for CVE-2026-108580(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 3× in last 7d / 3× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-10-10 16:28 UTCEG score recompute
- 2026-10-10 16:00 UTCEG score recompute
- 2026-10-10 16:00 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(4)
What is CVE-2026-108580?
CVE-2026-108580 is a medium vulnerability published on October 10, 2026. 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…
When was CVE-2026-108580 disclosed?
CVE-2026-108580 was first published on October 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-108580?
CVE-2026-108580 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-108580?
A fix for CVE-2026-108580 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-108580 are linked in the Vendor Advisories panel on this page.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-108580
Is Your Infrastructure Affected by CVE-2026-108580?
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