CVE-2021-47755

Oliver Library Server v5 - Arbitrary File Download

CVSS 8.7 HIGHEPSS 0.8%CWE-22

Vexday Risk Score

21Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 8.7EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

15 jan 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Produtos afetados

Softlink Education · Oliver Library Server

Referências

https://www.exploit-db.com/exploits/50599 https://www.softlinkint.com/product/oliver/