PT-2026-23012 · Cisco · Cisco Webex

Shravan Joshi · Published 2026-03-04 · Updated 2026-03-04 · CVE-2026-20149

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco Webex (affected versions not specified)

Description A flaw exists in Cisco Webex that could allow a remote attacker to perform a cross-site scripting (XSS) attack without needing to authenticate. This issue stems from insufficient filtering of user-provided input. An attacker could exploit this by tricking a user into clicking a malicious link, potentially leading to an XSS attack against the user.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-20149

Affected Products

Cisco Webex

References · 5

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-xss-TZFTbbwN · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20149 · Security Note
• https://twitter.com/cyberbivash/status/2029292440885002668 · Twitter Post
• https://t.me/CVEtracker/46344 · Telegram Post
• https://twitter.com/CVEnew/status/2029272798632276403 · Twitter Post