Weaver e-Bridge saveYZJFile Endpoint downloadUrl path traversal

Summaryinfo

A vulnerability was found in Weaver e-Bridge. It has been rated as problematic. Affected is an unknown function of the component saveYZJFile Endpoint. This manipulation of the argument downloadUrl causes path traversal. This vulnerability appears as CVE-2020-37278. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Weaver e-Bridge (version unknown) and classified as problematic. Affected by this vulnerability is an unknown function of the component saveYZJFile Endpoint. The manipulation of the argument downloadUrl with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2020-37278 since 10/02/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/02/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Weaver

Name

• e-Bridge

CPE 2.3info

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CPE 2.2info

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