CVE-2022-39197: Fortra Cobalt Strike Teamserver Cross-Site Scripting (XSS) Vulnerability

CISA Known Exploited Vulnerabilities

Name

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

Vendor

Fortra

Product

Cobalt Strike

Added to the catalog

2023-03-30

Due date for US federal agencies

2023-04-20

Weaknesses

CWE-20, CWE-79

Catalog version

2026.10.30

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.

Required action (CISA)

Apply updates per vendor instructions.

Ransomware use: CISA does not mark known use of this vulnerability in ransomware campaigns.

Links in CISA's notes

• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/
• https://nvd.nist.gov/vuln/detail/CVE-2022-39197

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status

Analyzed

Published

2022-09-22T01:15:11.963

Last modified

2026-06-17T04:57:53.710

Weaknesses

CWE-79

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).

References

• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/ (Mitigation, Vendor Advisory)
• https://www.cobaltstrike.com/blog/tag/release/ (Release Notes, Vendor Advisory)
• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/ (Mitigation, Vendor Advisory)
• https://www.cobaltstrike.com/blog/tag/release/ (Release Notes, Vendor Advisory)
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-39197 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:42:08.214Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2022-39197

CVE record

Assigner

mitre

State

PUBLISHED

Published

2022-09-22T00:43:41.000Z

Updated

2025-10-21T23:15:34.953Z

Problem types

n/a

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).

References

• https://www.cobaltstrike.com/blog/tag/release/
• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/

Read on 2026-11-03T02:01:35.720Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2022/39xxx/CVE-2022-39197.json

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

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