CVE-2021-48014criticalobserved exploitationCWE-22

CVE-2021-48014: critical vulnerability in FanRuan FineReport

FineReport 9.0 Unauthenticated Path Traversal File Write via ReportServer

Published 22 Oct 2026 · Updated 23 Oct 2026

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70Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.

ssvc Actcvss 9.3epss 2.0%

from disclosure to weapon

Published on NVDOct 22

VulnCheckOct 22

FineReport 9.0 contains a path traversal vulnerability in the /WebReport/ReportServer design_save_svg operation that allows unauthenticated attackers to write arbitrary files via the filePath parameter. Attackers can send a POST request with directory traversal sequences in filePath and a __CONTENT__ payload to write a JSP webshell and achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.

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

Affected products

FanRuan · FineReport

public PoCs found — 2

cve_referencegithub.com/NHPT/WebReportV9Exp/blob/main/WebReport_Exp.pyunverified cve_referencegithub.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/%E5%B8%86%E8%BD%AFOA/%E5%B8%86%E8%BD%AF%E6%8A%A5%E8%A1%A8%20V9%20design_save_svg%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%A6%86%E7%9B%96%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0.mdunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

https://github.com/NHPT/WebReportV9Exp/blob/main/WebReport_Exp.py https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/%E5%B8%86%E8%BD%AFOA/%E5%B8%86%E8%BD%AF%E6%8A%A5%E8%A1%A8%20V9%20design_save_svg%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%A6%86%E7%9B%96%E6%96%87%E4%BB%B6%E4%B8%8A%E4%BC%A0.md https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/finereport/fine-report-v9-file-upload.yaml https://www.fanruan.com/en/finereport https://www.vulncheck.com/advisories/finereport-9.0-unauthenticated-path-traversal-file-write-via-reportserver