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Fencer Vulns
high 7.5

CVE-2021-45027 json

An arbitrary file download vulnerability in Oliver v5 Library Server Versions < 5.00.008.053 via the FileServlet function allows for arbitr…

published 2022-09-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-31825

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known, plus a Nuclei check

Summary

An arbitrary file download vulnerability in Oliver v5 Library Server Versions < 5.00.008.053 via the FileServlet function allows for arbitrary file download by an attacker using unsanitized user supplied input.

Patch / fix

  • softlinkint oliver_v5_library 8.00.008.053

Exploit prediction

1.97% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Oliver 5 Library Server <8.00.008.053 - Local File Inclusion nuclei detection template
  • exploit-db.com https://www.exploit-db.com/exploits/50599 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness
  • CWE-494 Download of Code Without Integrity Check

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.