Path Traversal in Weaver Network Co., Ltd. E-Cology
CVE-2021-48013
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Weaver Network Co., Ltd. E-Cology — versions 8.0
Weakness classification (CWE)
References
- github.com/PeiQi0/PeiQi-WIKI-Book/blob/main/docs/wiki/oa/泛微OA/泛微OA E-Weaver ln… (technical-description, exploit)
- github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/wea… (technical-description)
- www.vulncheck.com/advisories/weaver-e-cology-8.0-unauthenticated-path-traversal… (third-party-advisory)
Frequently asked questions
- What is CVE-2021-48013?
- CVE-2021-48013 is a high-severity vulnerability in Weaver Network Co., Ltd. E-Cology, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-10-22.
- How severe is CVE-2021-48013?
- High severity. CVSS v3 base score is 7.5 out of 10.