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Vulnerabilities

Vulnerability · CVE-2022-39197

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

Published Sep 21, 2022 · catalog updated Jun 16, 2026 · Fortra Cobalt Strike

Patch now

CVE-2022-39197 is in the CISA known-exploited catalog, due Apr 20, 2023. Confirm Fortra Cobalt Strike against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium6.1
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
46.45%
Remediation
Remediation guidance
Affected products
cpe helpsystems/cobalt strike · vendor Fortra 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).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

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

How to fix CVE-2022-39197

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2022-39197 is in the CISA known-exploited catalog, due Apr 20, 2023. Confirm Fortra Cobalt Strike against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-20: Improper Input Validation; CWE-79: Cross-site Scripting (XSS). EPSS 46.45%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

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

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
  • VulnCheck 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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.