CVE-2021-47755

Oliver Library Server v5 - Arbitrary File Download

HIGH
7.5
CVSS Score
Published: January 15, 2026 at 03:52 PM UTC
Updated: June 17, 2026 at 04:18 AM UTC
2 products affected across 2 vendorsOliver V5 LibraryOliver Library Server

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 8.00.008.053
Affected range stops below 8.00.008.053, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

ExploitThird Party Advisory
Source: cverecord
https://www.exploit-db.com/exploits/50599

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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