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TI-2020-02698 Aliases CVE-2020-3136GHSA-7qqq-6cxm-7rmg

Cisco Jabber Guest Cross-Site Scripting Vulnerability

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

A vulnerability in the web-based management interface of Cisco Jabber Guest 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. This vulnerability affects Cisco Jabber Guest releases 11.1(2) and earlier.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0084 58th percentileScored 2026-11-07
Fix Fixed Cisco Jabber Guest (Cisco): 11.1(3)

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CiscoCisco Jabber Guestbefore 11.1(3)11.1(3)Patch availableCNA
  • Cisco Jabber Guest VendorCisco Affected before 11.1(3) Fixed in 11.1(3) Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cisco:jabber_guest:*:*:*:*:*:*:*:*up to 11.1\(2\)VulnerableCisco
  • cpe:2.3:a:cisco:jabber_guest:*:*:*:*:*:*:*:* Versions up to 11.1\(2\) Vulnerable ·Cisco

Remediation

  • Fix · CNA Cisco Jabber Guest (Cisco) Fixed in 11.1(3)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-3136
  2. 2026-10-03 Alias added: GHSA-7qqq-6cxm-7rmg

References

Advisory 1

  • TI-2016-07552 Improper input validation in Cisco Jabber Guest Server 10.6 CVSS 3.0MEDIUM 6.5
  • TI-2017-04516 Cross-site scripting in Cisco Jabber Guest Server CVSS 3.0MEDIUM 6.1
  • TI-2016-01203 Cross-site scripting (XSS) vulnerability in the management interface in Cisco Jabber… CVSS 3.0MEDIUM 6.1
  • TI-2014-06674 Cross-site scripting (XSS) vulnerability in the Guest Server in Cisco Jabber allows… CVSS 2.0MEDIUM 4.3
  • TI-2014-06673 The API in the Guest Server in Cisco Jabber, when HTML5 is used, allows remote attackers… CVSS 2.0MEDIUM 4.3
  • TI-2014-06672 The API in the Guest Server in Cisco Jabber, when the HTML5 CORS feature is used, allows… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences