CVE-2021-47755

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.exploit-db.com/exploits/50599	Exploit Third Party Advisory
https://www.softlinkint.com/product/oliver/	Product
https://www.exploit-db.com/exploits/50599	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:softlinkint:oliver_v5_library:*:*:*:*:*:*:*:*

History

26 Jan 2026, 16:15

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~9.8~~	v2 : unknown v3 : 7.5

23 Jan 2026, 18:25

Type	Values Removed	Values Added
First Time		Softlinkint oliver V5 Library Softlinkint
CPE		cpe:2.3:a:softlinkint:oliver_v5_library::::::::
References	~~() https://www.exploit-db.com/exploits/50599 -~~	() https://www.exploit-db.com/exploits/50599 - Exploit, Third Party Advisory
References	~~() https://www.softlinkint.com/product/oliver/ -~~	() https://www.softlinkint.com/product/oliver/ - Product

15 Jan 2026, 19:16

Type	Values Removed	Values Added
References	~~() https://www.exploit-db.com/exploits/50599 -~~	() https://www.exploit-db.com/exploits/50599 -

15 Jan 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-15 16:16

Updated : 2026-01-26 16:15

NVD link : CVE-2021-47755

Mitre link : CVE-2021-47755

CVE.ORG link : CVE-2021-47755

JSON object : View

Products Affected

softlinkint

oliver_v5_library

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

{"id": "CVE-2021-47755", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-01-15T16:16:06.350", "references": [{"url": "https://www.exploit-db.com/exploits/50599", "tags": ["Exploit", "Third Party Advisory"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.softlinkint.com/product/oliver/", "tags": ["Product"], "source": "disclosure@vulncheck.com"}, {"url": "https://www.exploit-db.com/exploits/50599", "tags": ["Exploit", "Third Party Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-01-26T16:15:55.253", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:softlinkint:oliver_v5_library:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "75D5CDA9-CADE-4A89-BE0B-E65CB6C052FB", "versionEndExcluding": "8.00.008.053"}], "operator": "OR"}]}], "sourceIdentifier": "disclosure@vulncheck.com"}