CVE-2020-37278 Weaver e-Bridge Unauthenticated Arbitrary File Read via saveYZJFile
Remote attackers can read arbitrary files and perform server-side request forgery via the saveYZJFile endpoint in Weaver e-Bridge.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-37278?
CVE-2020-37278 is a high-severity server-side request forgery vulnerability in Weaver e-Bridge, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-918
Which versions are affected by CVE-2020-37278?
How do I fix CVE-2020-37278?
No fix has been published for CVE-2020-37278 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2020-37278 being exploited?
There is no known exploitation of CVE-2020-37278 in the wild and no public exploit code.
Sources
Also known as GHSA-jh67-5hqg-r8p4.