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High · 7.5 CVE-2021-47755 EUVD-2026-2777GHSA-c22c-g99c-vw87

Oliver Library Server v5 - Arbitrary File Download

Published Jan 15, 2026 · Updated Apr 7, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
Softlink Education Oliver Library Server < 8.00.008.053 —

References