Vulnerability record · CVE-2021-31589 · published 5 January 2022

CVE-2021-31589: Beyondtrust appliance base software cross-site scripting vulnerability

Beyondtrust · Appliance Base Software

A cross-site scripting (XSS) vulnerability has been reported and confirmed for BeyondTrust Secure Remote Access Base Software version 6.0.1 and older, which allows the injection of unauthenticated, specially-crafted web requests without proper sanitization.

6.1 CVSS 3.1 Medium EPSS 25% · top 2.1% CWE-79 · Cross-site scripting

6.1CVSS 3.1 base score, v2 4.3

25%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 4 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Appliance Base Software Beyondtrust

References

Link	Tags
http://packetstormsecurity.com/files/165408/BeyondTrust-Remote-Support-6.0-Cross-Site-Scripting.html	ExploitThird Party AdvisoryVDB Entry
https://cxsecurity.com/issue/WLB-2022010013	ExploitIssue TrackingThird Party Advisory
https://www.beyondtrust.com/docs/release-notes/index.htm	Release NotesVendor Advisory
http://packetstormsecurity.com/files/165408/BeyondTrust-Remote-Support-6.0-Cross-Site-Scripting.html	ExploitThird Party AdvisoryVDB Entry
https://cxsecurity.com/issue/WLB-2022010013	ExploitIssue TrackingThird Party Advisory
https://www.beyondtrust.com/docs/release-notes/index.htm	Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-31589), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.