Unauthenticated File Read Vulnerability in Weaver e-Bridge by Weaver
CVE-2020-37278

8.7HIGH

Key Information:

Vendor

Weaver

Status
E-bridge
Vendor
CVE Published:
2 October 2026

What is CVE-2020-37278?

Weaver e-Bridge contains a vulnerability that allows remote attackers to read arbitrary files on the host system. By supplying a file URL to the downloadUrl parameter of the saveYZJFile endpoint, attackers can exploit this flaw to access sensitive information, including system files like /etc/passwd, as well as configuration and credential files. Additionally, the endpoint's support for HTTP/HTTPS URLs opens the door for potential server-side request forgery attacks against internal network resources, posing a significant security risk to affected systems.

Affected Version(s)

e-Bridge *

References

https://github.com/projectdiscovery/nuclei-templates/blob...
technical-description
https://www.weaver.com.cn/cs/ebridge_full_log_en.html
release-notes
https://www.vulncheck.com/advisories/weaver-e-bridge-unau...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The Shadowserver Foundation
.