---
title: "CVE-2020-37278: Weaver e-Bridge - Arbitrary File Read & Server-Side Request Forgery"
description: "Weaver e-Bridge contains an unauthenticated arbitrary file read vulnerability caused by improper validation of the downloadUrl parameter in the saveYZJFile endpoint, letting remote attackers read sensitive files and perform server-side request forgery, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2020-37278/
---

# CVE-2020-37278 Weaver e-Bridge - Arbitrary File Read & Server-Side Request Forgery

Weaver e-Bridge contains an unauthenticated arbitrary file read vulnerability caused by improper validation of the downloadUrl parameter in the saveYZJFile endpoint, letting remote attackers read sensitive files and perform server-side request forgery, exploit requires no authentication.

CVSS base score 7.5 /10

High

CISA KEV

Exploited in the wild

Public exploit

None known

Authentication

Not required

EPSS

0.36% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2020-37278)

## Details

Type

Arbitrary File Read

Impact

File System Read, Information Disclosure, Server Side Request Forgery

CVSS vector

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

Published

2 October 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to the latest version that patches the arbitrary file read and SSRF vulnerabilities.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2020-37278](https://nvd.nist.gov/vuln/detail/CVE-2020-37278)
- [https://www.cve.org/CVERecord?id=CVE-2020-37278](https://www.cve.org/CVERecord?id=CVE-2020-37278)
- [https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/weaver/weaver-ebridge-lfi.yaml](https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/weaver/weaver-ebridge-lfi.yaml)
- [https://www.vulncheck.com/advisories/weaver-e-bridge-unauthenticated-arbitrary-file-read-via-saveyzjfile](https://www.vulncheck.com/advisories/weaver-e-bridge-unauthenticated-arbitrary-file-read-via-saveyzjfile)
- [https://www.weaver.com.cn/cs/ebridge\_full\_log\_en.html](https://www.weaver.com.cn/cs/ebridge_full_log_en.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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