---
id: "CVE-2022-39197"
kind: "vulnerability"
aliases: ["CVE-2022-39197"]
title: "An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote\u2026"
severity: "high"
cvss: 6.1
epss: null
exploited: true
status: "open"
category: "other"
products: [{"name": "Fortra Cobalt Strike", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "helpsystems cobalt strike", "fixed": ["4.7.1"], "affected": "< 4.7.1", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["cobalt-strike", "exploited", "other", "red-team", "teamserver"]
not_affected_if: ["not-running-teamserver"]
published_at: "2022-09-22T01:15:11+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T22:29:04+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-39197", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-39197", "first_seen_at": "2026-10-23T22:29:04+00:00"}]
---

# An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote…

Fortra Cobalt Strike Teamserver has a cross-site scripting flaw where a malformed username in the Beacon configuration can be used to run code remotely. CISA lists it as actively exploited in the wild.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Fortra Cobalt Strike affected ? fixed ?
- vendor:helpsystems cobalt strike affected < 4.7.1 fixed 4.7.1

## Fix

Apply updates per vendor instructions (CISA KEV guidance); the specific fixed version is unknown from the sources.

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-39197
- 2026-10-23T22:29:04+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2022-39197

## From the sources

An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on the Cobalt Strike teamserver. To exploit the vulnerability, one must first inspect a Cobalt Strike payload, and then modify the username field in the payload (or create a new payload with the extracted information and then modify that username field to be malformed).

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_