CVE-2020-26574
CRITICALLeostream Connection Broker 8.2.x - XSS
Title source: llmDescription
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
Exploits (1)
github
WORKING POC
11 stars
by X-C3LL · pythonpoc
https://github.com/X-C3LL/PoC-CVEs/tree/master/CVE-2020-26574
Scores
CVSS v3
9.6
EPSS
0.0309
EPSS Percentile
86.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Details
CWE
CWE-79
Status
published
Products (1)
leostream/connection_broker
8.2.15 - 8.2.73
Published
Oct 06, 2020
Tracked Since
Feb 18, 2026