Vulnerability · Published Oct 22, 2026 · Assigned by VulnCheck

CVE-2021-48013Weaver E-cology 8.0 Unauthenticated Path Traversal via ln.FileDownload

High 7.5

In plain English

A high-severity path traversal in E-cology from Weaver Network Co., Ltd.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.7%top 45.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Weaver Network Co., Ltd.	E-cology	8.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

PeiQi Wiki GitHub Exploit technical-description, exploit
Nuclei Template technical-description
VulnCheck Advisory: Weaver E-cology 8.0 Unauthenticated Path Traversal via ln.FileDownload third-party-advisory