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High [CVE-2026-20191] Cisco Catalyst Center Arbitrary File Read Vulnerability

This high-severity Cisco advisory covers CVE-2026-20191 affecting Catalyst Center.

cisco-sa-catc-file-read-wLH2vf8X Published Jul 1, 2026Updated by vendor Jul 1, 2026

CVE-2026-20191

Affected products & platforms

CiscoManagementCatalyst Center

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Summary

A vulnerability in Cisco Catalyst Center could allow an unauthenticated, remote attacker to read arbitrary files from a restricted container.

This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device.

A successful exploit could allow the attacker to read arbitrary files from a restricted container of the affected device.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

Affected versions

Scope: This vulnerability affects Cisco Catalyst Center, both virtual and hardware appliances, regardless of device configuration.
Release 3.1 (first fixed: 3.1.6 GSMU200)
Release 2.3.7 (first fixed: 2.3.7.11-VA GSMU100)
Release 3.1 (first fixed: 3.1.6 GSMU200)

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

3.1.6 GSMU200
2.3.7.11-VA GSMU100

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Upgrade to the first fixed release for your train per the Fixed Releases table in this advisory.
Release 3.1: upgrade to 3.1.6 GSMU200.
Release 2.3.7: upgrade to 2.3.7.11-VA GSMU100.
Release 3.1: upgrade to 3.1.6 GSMU200.

Workaround status

There are no workarounds that address this vulnerability.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Cisco Security Advisories (PSIRT)official
Official vendor feed — the source of truth for this advisory. VulnPulse polled this feed and parsed this entry from it. Discovered from the machine-readable feed https://sec.cloudapps.cisco.com/security/center/psirtrss20/CiscoSecurityAdvisory.xml; this link opens the Cisco advisory index instead of the raw feed document.
Cisco
Vendor advisory pageofficial
Advisory page fetched and parsed to extract affected/fixed versions and mitigation guidance beyond what the feed carries.
Cisco

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2026-20191NVD CVE.org MITRE

Official resources

Cisco Catalyst Center upgrade guide (target: 3.1.6 GSMU200 / 2.3.7.11-VA GSMU100)
Official documentation
This advisory names 3.1.6 GSMU200 / 2.3.7.11-VA GSMU100 as the first fixed releases — official upgrade documentation for Cisco Catalyst Center (formerly DNA Center).
Cisco Catalyst Center release notes
Release notes
Release notes for the fixed Catalyst Center version.

Discussion(0)

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