Cisco Webex Meetings Link cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco Webex Meetings. It has been declared as problematic. This vulnerability affects unknown code of the component Link Handler. Executing a manipulation can lead to cross site scripting. This vulnerability is tracked as CVE-2026-20149. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Webex Meetings (version now known). It has been declared as problematic. This vulnerability affects some unknown processing of the component Link Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

A vulnerability in Cisco Webex could have allowed an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack. Cisco has addressed this vulnerability, and no customer action is needed. This vulnerability was due to improper filtering of user-supplied input. Prior to this vulnerability being addressed, an attacker could have exploited this vulnerability by persuading a user to follow a malicious link. A successful exploit could have allowed the attacker to conduct an XSS attack against the targeted user.

The advisory is available at sec.cloudapps.cisco.com. This vulnerability was named CVE-2026-20149 since 10/08/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/10/2026). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-9473) and CERT Bund (WID-SEC-2026-0598). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Cisco WebEx

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (cisco): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/08/2025 CVE reserved
03/04/2026 +147 days Advisory disclosed
03/04/2026 +0 days VulDB entry created
03/10/2026 +6 days VulDB entry last update

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-webex-xss-TZFTbbwN
Status: Confirmed

CVE: CVE-2026-20149 (🔒)
GCVE (CVE): GCVE-0-2026-20149
GCVE (VulDB): GCVE-100-348802
EUVD: 🔒
CERT Bund: WID-SEC-2026-0598 - Cisco WebEx: Schwachstelle ermöglicht Cross-Site Scripting

Entryinfo

Created: 03/04/2026 18:55
Updated: 03/10/2026 18:07
Changes: 03/04/2026 18:55 (64), 03/05/2026 01:13 (1), 03/05/2026 11:38 (7), 03/10/2026 18:07 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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