CVE-2020-37278

HIGH 7.5

Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFile

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

Weaver e-Bridge contains an unauthenticated arbitrary file read vulnerability that allows remote attackers to access 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 read sensitive files such as /etc/passwd or configuration and credential files, and the same endpoint's support for http(s) URLs also enables server-side request forgery against internal network resources. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-17.

CWE	CWE-918
Vendor	weaver
Product	e-bridge
Published	Oct 2, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Weaver / e-Bridge

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/weaver/weaver-ebridge-lfi.yaml weaver.com.cn: https://www.weaver.com.cn/cs/ebridge_full_log_en.html vulncheck.com: https://www.vulncheck.com/advisories/weaver-e-bridge-unauthenticated-arbitrary-file-read-via-saveyzjfile

Credits

🔍 The Shadowserver Foundation