Risk Letters

Exploited vulnerability

CVE-2020-37278

TLP:CLEAR

Server-Side Request Forgery (SSRF)

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.

Facts

  • Vendor: Weaver
  • Product: e-Bridge
  • EPSS (probability of exploitation within 30 days): 0.4 %
  • First known exploitation: 2 October 2026
  • First seen by Risk Letters: 2 October 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD