CVE-2020-26574

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

CVSS v3.1

9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v2.0

9.3 HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS

2.12% chance of exploitation in the next 30 days, 81th percentile

Published

2020-10-06

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://adepts.of0x.cc/leostream-xss-to-rce/

References

• CVE Record
• NVD entry

Related

• CVE-2020-26567
• CVE-2020-26623
• CVE-2020-26566
• CVE-2020-26624
• CVE-2020-26565
• CVE-2020-26625