What is CVE-2021-47755?

CVE-2021-47755 is a high-severity vulnerability in Softlink Education Oliver Library Server, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-01-15.

How severe is CVE-2021-47755?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Softlink Education Oliver Library Server

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 manipu…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.008 (50.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Softlink Education Oliver Library Server — versions < 8.00.008.053
Softlinkint Oliver_v5_library

Weakness classification (CWE)

CWE-22 — Path Traversal

References

disclosure@vulncheck.com (Exploit, Third Party Advisory, exploit)
disclosure@vulncheck.com (Product, product)

Frequently asked questions

What is CVE-2021-47755?: CVE-2021-47755 is a high-severity vulnerability in Softlink Education Oliver Library Server, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-01-15.
How severe is CVE-2021-47755?: High severity. CVSS v3 base score is 7.5 out of 10.