Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability

Cisco Unified Communications Manager

Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root. Added to CISA KEV on 2026-06-25 (federal deadline 2026-06-28).

First seen: 25 Jun 2026
Last update: 25 Jun 2026, 12:00 UTC
Identifiers: CVE-2026-20230
Source: CISA KEV
On the menu as: VPN & firewalls

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Cisco Unified Communications Manager
Ids: CVE-2026-20230

Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) contain a server-side request forgery (SSRF) Vulnerability that could allow an unauthenticated, remote attacker to write files to the underlying operating system that could be used later to elevate to root. Added to CISA KEV on 2026-06-25 (federal deadline 2026-06-28).

## Steps
1. This touches infrastructure (vpn-edge). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-20230") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-20230 https://www.cisco.com/c/en/us/support/docs/csa/cisco-sa-cucm-ssrf-cXPnHcW.html
https://pwned.coffee/i/cisco-unified-communications-manager-server-side-request-cve-2026-20230

Sources

Totalone hot coffee