CVE-2021-47755
CVE-2021-47755 is a high-severity vulnerability in Softlinkint Oliver V5 Library with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 8.7
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-2777
- Weakness: CWE-22
- Affected product: Softlinkint Oliver V5 Library
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2021-47755?
- CVE-2021-47755 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2021-47755 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-47755?
- CVE-2021-47755 affects Softlinkint Oliver V5 Library. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-47755?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2021-47755 have an EU (EUVD) identifier?
- Yes. CVE-2021-47755 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2777.
- When was CVE-2021-47755 published?
- CVE-2021-47755 was published on 2026-01-15 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:softlinkint:oliver_v5_library:*:*:*:*:*:*:*:*
More vulnerabilities in Softlinkint Oliver V5 Library
- CVE-2021-45027 — High (CVSS 7.5): An arbitrary file download vulnerability in Oliver v5 Library Server Versions < 5.00.008.053 via the FileServlet…
All CVEs affecting Softlinkint Oliver V5 Library →
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