Home › CVE Intelligence › CVE-2026-54567
CVSS 9.8 CRITICAL Vulnerability

CVE-2026-54567: Flask-Reuploaded: Extension-denylist bypass via case-folding asymmetry in name-override p…

1. Header | Field | Value | |---|---| | Title | Extension-denylist bypass via case-folding asymmetry in name-override path (incomplete-fix variant of CVE-2026-27641) | | Project | Flask-Reuploaded (flask_uploads) | | Af…

9.8CVSS Score
CRITICALSeverity
NOCISA KEV
VulnerabilityImpact Type

📋 Vulnerability Details

CVE IDCVE-2026-54567
VendorUnknown Vendor
Affected ProductUnknown Product
Vulnerability TypeVulnerability
CVSS Score9.8 (CRITICAL)
Actively Exploited❌ No known exploitation
Patch StatusPending Vendor Disclosure
Reported ByCYBERDUDEBIVASH SENTINEL APEX Intelligence (via sentinel_apex)

🔬 Technical Analysis

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1. Header

| Field | Value | |---|---| | Title | Extension-denylist bypass via case-folding asymmetry in name-override path (incomplete-fix variant of CVE-2026-27641) | | Project | Flask-Reuploaded (flask_uploads) | | Affected | <= 1.5.0 (latest release; commit... [Full analysis available on Pro]

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