CVE-2026-15371: CWE-177 Improper handling of URL encoding (hex encoding) in Rapid7 Velociraptor
Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS.
AI Analysis
Technical Summary
Velociraptor's web GUI feature that allows specifying custom column types includes a URL type which forms clickable URLs from cell values. The vulnerability arises because the code does not restrict allowed URL schemes, permitting an attacker to use the JavaScript scheme. This flaw (CWE-177) enables an attacker with high privileges and user interaction to execute arbitrary JavaScript in the context of the Velociraptor GUI, resulting in a cross-site scripting (XSS) vulnerability.
Potential Impact
Successful exploitation can lead to high impact cross-site scripting attacks, allowing an attacker to execute arbitrary JavaScript in the victim's browser within the Velociraptor GUI context. This can compromise confidentiality and integrity of data accessible through the GUI. The CVSS score of 8.1 reflects high impact on confidentiality and integrity, requiring user interaction and high privileges to exploit.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when interacting with URLs in the Velociraptor GUI, especially those from untrusted sources. Restricting user privileges and limiting exposure to untrusted inputs may reduce risk.
CVE-2026-15371: CWE-177 Improper handling of URL encoding (hex encoding) in Rapid7 Velociraptor
Description
Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS.
CVSS v3.1
Score 8.1high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Velociraptor's web GUI feature that allows specifying custom column types includes a URL type which forms clickable URLs from cell values. The vulnerability arises because the code does not restrict allowed URL schemes, permitting an attacker to use the JavaScript scheme. This flaw (CWE-177) enables an attacker with high privileges and user interaction to execute arbitrary JavaScript in the context of the Velociraptor GUI, resulting in a cross-site scripting (XSS) vulnerability.
Potential Impact
Successful exploitation can lead to high impact cross-site scripting attacks, allowing an attacker to execute arbitrary JavaScript in the victim's browser within the Velociraptor GUI context. This can compromise confidentiality and integrity of data accessible through the GUI. The CVSS score of 8.1 reflects high impact on confidentiality and integrity, requiring user interaction and high privileges to exploit.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when interacting with URLs in the Velociraptor GUI, especially those from untrusted sources. Restricting user privileges and limiting exposure to untrusted inputs may reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- rapid7
- Date Reserved
- 2026-07-10T08:15:06.308Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8442fac6e8be033220da53
Added to database: 08/18/2026, 11:33:14 UTC
Last enriched: 08/18/2026, 11:34:34 UTC
Last updated: 08/18/2026, 22:49:25 UTC
Views: 7
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