CVE-2021-4463
NoneCVSS
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EPSS
1.6%
Published
Nov 12, 2025
CISA due date
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The record
Longjing Technology BEMS API versions up to and including 1.21 contains an unauthenticated arbitrary file download vulnerability in the 'downloads' endpoint. The 'fileName' parameter is not properly sanitized, allowing attackers to craft traversal sequences and access sensitive files outside the intended directory.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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