# CVE-2026-76475: Cisco Unified Communications Products Hardening Release: October 2026 - Cross-site Scripting Vulnerabilities


- **Severity:** Critical 9.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 21 Oct 2026
- **Updated:** 22 Oct 2026
- **Also known as:** GHSA-g6jg-jfw2-23p4

## What is CVE-2026-76475?

CVE-2026-76475 is a critical vulnerability in Cisco Emergency Responder, published on 21 Oct 2026. 

### Official description

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams for Cisco Emergency Responder, Cisco Prime Collaboration Deployment, Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), and Cisco Unity Connection have conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities.

The vulnerabilities tracked by CVE-2026-76475 are related to issues concerning improper neutralization of input during web page generation that are grouped under the Common Weakness Enumeration (CWE) Base CWE-79.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-76475?


## How do I fix CVE-2026-76475?

No fix has been published for CVE-2026-76475 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76475 being exploited?

There is no known exploitation of CVE-2026-76475 in the wild and no public exploit code.

Public exploit code:

- Offline Python detector for CVE-2026-76475 exposure in Cisco UC inventories, with CSV/JSON input, versioned rules, and auditable reports. (github_poc): https://github.com/mehmet-emir-eroglu/CVE-2026-76475

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76475 and fix it if it is affected.

What it is: CVE-2026-76475 is a critical vulnerability in Cisco Emergency Responder, published on 21 Oct 2026. 
Exploitation: There is no known exploitation of CVE-2026-76475 in the wild and no public exploit code.

Affected product: Cisco Emergency Responder. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-76475/ (Markdown: https://insights.sbomify.com/CVE-2026-76475/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76475
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76475
- OSV: https://osv.dev/vulnerability/CVE-2026-76475

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-76475/
Summaries are generated and may contain mistakes; the official description above is the record.