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Findings

CVE-2022-39197

Fortra Cobalt Strike Teamserver Cross-Site Scripting (XSS) Vulnerability

Published Sep 21, 2022 · updated Jun 16, 2026 · helpsystems cobalt strike

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).

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 21, 2022 · Catalog

    Detected

    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

  2. Mar 30, 2023 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 20, 2023 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Required action

Apply updates per vendor instructions.

CISA due date Apr 20, 2023

Affected

  • cpe helpsystems/cobalt strikeversion unspecified
  • vendor Fortra Cobalt Strikeversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2022-39197

    Fortra Cobalt Strike contains a cross-site scripting (XSS) vulnerability in Teamserver that would allow an attacker to set a malformed username in the Beacon configuration, allowing them to execute code remotely.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2022-39197

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2022-39197

    30-day exploitation probability 46.4%

    first.org
  • NIST NVDVulnerability recordCVE-2022-39197

    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 usernam

    nvd.nist.gov

References