CVE-2020-3137

A vulnerability in the web-based management interface of Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based management interface of an affected device. The vulnerability exists because the web-based management interface of the affected device does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or to access sensitive, browser-based information.

• CWE-79
• CWE-79

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-email-sec-xss-EbjXuXwPVendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-email-sec-xss-EbjXuXwPVendor Advisory

Published

Sep 23, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-3131A vulnerability in the Cisco Webex Teams client for Windows …6.5
• CVE-2020-3132A vulnerability in the email message scanning feature of Cis…5.9
• CVE-2020-3133A vulnerability in the email message scanning of Cisco Async…7.5
• CVE-2020-3134A vulnerability in the zip decompression engine of Cisco Asy…6.5
• CVE-2020-3135A vulnerability in the web-based management interface of Cis…8.8
• CVE-2020-3136A vulnerability in the web-based management interface of Cis…6.1
• CVE-2020-3138A vulnerability in the upgrade component of Cisco Enterprise…6.7
• CVE-2020-3139A vulnerability in the out of band (OOB) management interfac…5.3
• CVE-2020-3140A vulnerability in the web management interface of Cisco Pri…9.8
• CVE-2020-3141Multiple vulnerabilities in the web management framework of …8.8
• CVE-2020-3142A vulnerability in Cisco Webex Meetings Suite sites and Cisc…7.5
• CVE-2020-3143A vulnerability in the video endpoint API (xAPI) of Cisco Te…7.2