VYPR
High severity7.5NVD Advisory· Published Jan 15, 2026· Updated Jun 17, 2026

CVE-2021-47755

CVE-2021-47755

Description

Oliver Library Server v5 contains a file download vulnerability that allows unauthenticated attackers to access arbitrary system files through unsanitized input in the FileServlet endpoint. Attackers can exploit the vulnerability by manipulating the 'fileName' parameter to download sensitive files from the server's filesystem.

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Affected products

3

Patches

Vulnerability mechanics

References

2

News mentions

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