CVE-2022-39197 (GCVE-0-2022-39197)
Vulnerability from cvelistv5 – Published: 2022-09-22 00:43 – Updated: 2025-10-21 23:15Summary
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).
Severity
6.1 (Medium)
SSVC
Exploitation: active
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-28 21:44 UTC
CWE
- n/a
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.cobaltstrike.com/blog/tag/release/ | x_refsource_MISC |
| https://www.cobaltstrike.com/blog/out-of-band-upd… | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: ff928878-404e-4c0a-9049-dd77d472768b
Exploited: Yes
Timestamps
First Seen: 2023-03-30
Asserted: 2023-03-30
Scope
Notes: Fortra Cobalt Strike Teamserver Cross-Site Scripting (XSS) Vulnerability | Affected: Fortra / Cobalt Strike | Description: 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: Apply updates per vendor instructions. | Due date: 2023-04-20 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/; https://nvd.nist.gov/vuln/detail/CVE-2022-39197
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-20 CWE-79 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Cobalt Strike |
| Due Date | 2023-04-20 |
| Date Added | 2023-03-30 |
| Vendorproject | Fortra |
| Vulnerabilityname | Fortra Cobalt Strike Teamserver Cross-Site Scripting (XSS) Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-10-02 08:09 CEST
| Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 706f6a71-3953-4ad2-b4b2-9f9f94f0c9a8
Exploited: Yes
Timestamps
First Seen: 2023-03-30
Asserted: 2023-03-30
Scope
Notes: An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on... | Affected: HelpSystems / Cobalt Strike | CVSS: 6.1 (MEDIUM) | EPSS: 0.46446 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: previdian
Details
| Feed | Previdian (previdian.com) |
|---|---|
| Title | An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on... |
| Cve Id | CVE-2022-39197 |
| Vendor | HelpSystems |
| Ghsa Id | None |
| Product | Cobalt Strike |
| Added Date | 2023-03-30T00:00:00.000Z |
| Cvss Score | 6.1 |
| Epss Score | 0.46446 |
| Previous Ids | |
| Cvss Severity | MEDIUM |
| Virtual Patch | False |
| Cvss Estimated | False |
| Epss Percentile | 0.98784 |
| Used In Malware | unknown |
| Vulnerability Id | CVE-2022-39197 |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-10-02 09:11 CEST
| Updated: 2026-10-02 09:11 CEST
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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