CVE-2021-48013: high-severity vulnerability in Weaver Network Co., Ltd. E-cology
Weaver E-cology 8.0 Unauthenticated Path Traversal via ln.FileDownload
Published · Updated
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63Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 8.7epss 0.7%
from disclosure to weapon
Published on NVDOct 22
VulnCheckOct 22
Weaver E-cology 8.0 contains a path traversal vulnerability that allows unauthenticated attackers to read arbitrary files through the fpath parameter of the /weaver/ln.FileDownload endpoint. Attackers can send crafted GET requests with directory traversal sequences in fpath to retrieve sensitive files such as WEB-INF/web.xml from the server. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18.
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
Affected products
Weaver Network Co., Ltd. · E-cology⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Weaver Network Co., Ltd. E-cology
In the same product, most dangerous first.
CVE-2026-22679CRITICALWeaver E-cology 10.0 Unauthenticated RCE via dubboApi Debug EndpointEPSS 20.4%CVE-2022-50992HIGHWeaver E-cology 9.5 Unauthenticated Arbitrary File Read via XmlRpcServletEPSS 0.7%CVE-2019-25776HIGHWeaver E-cology SQL Injection via SyncUserInfo.jspEPSS 0.6%CVE-2025-71434HIGHWeaver E-cology < 10.76 Unauthenticated SQL Injection via doc/out/more/listEPSS 0.3%
References
https://github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/%E6%B3%9B%E5%BE%AEOA/%E6%B3%9B%E5%BE%AEOA%20E-Weaver%20ln.FileDownload%20%E4%BB%BB%E6%84%8F%E6%96%87%E4%BB%B6%E8%AF%BB%E5%8F%96%E6%BC%8F%E6%B4%9E.mdhttps://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/weaver/ecology/ecology-filedownload-directory-traversal.yamlhttps://www.vulncheck.com/advisories/weaver-e-cology-8.0-unauthenticated-path-traversal-via-ln-filedownload