CVE-2020-26574

Public Exploit

Description

Leostream Connection Broker 8.2.x is affected by stored XSS. An unauthenticated attacker can inject arbitrary JavaScript code via the webquery.pl User-Agent HTTP header. It is rendered by the admins the next time they log in. The JavaScript injected can be used to force the admin to upload a malicious Perl script that will be executed as root via libMisc::browser_client. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

Category

9.6
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.09% Top 15%
Vendor Advisory leostream.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://adepts.of0x.cc/leostream-xss-to-rce/ third party advisory exploit
https://www.leostream.com/resources/product-lifecycle/ release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-26574?
CVE-2020-26574 has been scored as a critical severity vulnerability.
How to fix CVE-2020-26574?
To fix CVE-2020-26574, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-26574 being actively exploited in the wild?
It is possible that CVE-2020-26574 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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