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Vulnerability record · CVE-2021-40272 · published 14 November 2022

CVE-2021-40272: Op5 monitor cross-site scripting vulnerability

Op5 · Monitor

OP5 Monitor 8.3.1, 8.3.2, and OP5 8.3.3 are vulnerable to Cross Site Scripting (XSS).

6.1 CVSS 3.1 Medium EPSS 1.1% · top 36.0% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

OP5 Monitor 8.3.1, 8.3.2, and OP5 8.3.3 are vulnerable to Cross Site Scripting (XSS).

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.

References

LinkTags
https://github.com/hosakauk/exploits/blob/master/itrs_op5_monitor_xss.pdf ExploitThird Party Advisory
https://github.com/hosakauk/exploits/blob/master/itrs_op5_monitor_xss.pdf ExploitThird Party Advisory

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Related vulnerabilities

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

10.0CVE-2012-0262op5 Monitor op5config command injection via password parameterThe op5config/welcome component in system-op5config before 2.0.3 in op5 Monitor and op5 Appliance before 5.5.3 passes the password parameter to a she…EPSS 73%analysed10.0CVE-2012-0264Op5 monitor permissions and access controls vulnerabilityop5 Monitor and op5 Appliance before 5.5.0 do not properly manage session cookies, which allows remote attackers to have an unspecified impact via un…EPSS 4.4%10.0CVE-2012-0261op5 Monitor system-portal license.php command injectionThe license.php script in op5 Monitor's system-portal (before 1.6.2) and op5 Appliance (before 5.5.3) passes the timestamp parameter of an install ac…EPSS 74%analysed6.8CVE-2008-5028Nagios cross-site request forgery vulnerabilityCross-site request forgery (CSRF) vulnerability in cmd.cgi in (1) Nagios 3.0.5 and (2) op5 Monitor before 4.0.1 allows remote attackers to send comma…EPSS 1.7%6.5CVE-2008-5027Nagios permissions and access controls vulnerabilityThe Nagios process in (1) Nagios before 3.0.5 and (2) op5 Monitor before 4.0.1 allows remote authenticated users to bypass authorization checks, and …EPSS 6.7%5.0CVE-2013-6141Op5 monitor vulnerabilityUnspecified vulnerability in op5 Monitor before 6.1.3 allows attackers to read arbitrary files via unknown vectors related to lack of authorization.EPSS 0.99%4.3CVE-2014-4907Op5 monitor cross-site scripting vulnerabilityCross-site scripting (XSS) vulnerability in share/pnp/application/views/kohana_error_page.php in PNP4Nagios before 0.6.22 allows remote attackers to …EPSS 2.2%4.0CVE-2012-0263Op5 monitor information exposure vulnerabilitymonitor/index.php in op5 Monitor and op5 Appliance before 5.5.1 allows remote authenticated users to obtain sensitive information such as database an…EPSS 1.9%

Source: NIST National Vulnerability Database (record CVE-2021-40272), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.