CVE-2021-47755

HIGH

Oliver Library Server < 8.00.008.053 - Unauthenticated Path Traversal via FileServlet fileName Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47755. PoCs published by Mandeep Singh.

AI-analyzed exploit summary This exploit demonstrates an arbitrary file download vulnerability in Oliver Library Server v5 via the FileServlet function. The vulnerability allows attackers to download arbitrary files by manipulating the fileName parameter in the URL.

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.

Exploits (1)

exploitdb WORKING POC
by Mandeep Singh · textremotewindows
https://www.exploit-db.com/exploits/50599

This exploit demonstrates an arbitrary file download vulnerability in Oliver Library Server v5 via the FileServlet function. The vulnerability allows attackers to download arbitrary files by manipulating the fileName parameter in the URL.

Classification
Working Poc 90%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Oliver Library Server v5 < 8.00.008.053
No auth needed
Prerequisites: Network access to the target server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/50599

Scores

CVSS v3 7.5
EPSS 0.0075
EPSS Percentile 50.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (2)
Softlink Education/Oliver Library Server < 8.00.008.053
softlinkint/oliver_v5_library < 8.00.008.053
Published Jan 15, 2026
Tracked Since Feb 18, 2026