CVE-2026-45087
CriticalSummary
Dalfox, an XSS scanning tool, prior to version 2.13.0, allowed arbitrary shell command execution by unauthorized users when the server was run in REST API mode. The issue stemmed from the deserialization of attacker-supplied JSON data, enabling command execution on the host.
Risk Assessment
The organization is at significant risk as unauthorized users can execute arbitrary commands on the server, potentially leading to system compromise.
Recommendation
It is recommended to update Dalfox to version 2.13.0 or later to mitigate this vulnerability. Additionally, configure the server to be inaccessible publicly without proper security measures.
Other vulnerabilities in Dalfox
See all- CVE-2026-45090High
Dalfox, an XSS scanning tool, has a vulnerability prior to version 2.13.0 that causes a runtime panic due to the use of a closed results channel. This bug can lead to the entire Dalfox process crashing.
- CVE-2026-45089High
Dalfox, an XSS scanning tool, prior to version 2.13.0, allowed unauthorized users to write logs to any file on the filesystem when running in API server mode.
- CVE-2026-45088High
Dalfox, an XSS scanning tool, prior to version 2.13.0, allowed deserialization of malicious JSON payloads from the attacker's request body, enabling the leakage of arbitrary file contents from the server. These values were then used as XSS payloads in HTTP requests.
Original NVD description (English source)
Dalfox is a powerful open-source XSS scanner and utility focused on automation. Prior to 2.13.0, when dalfox is started in REST API server mode (dalfox server), the server binds to 0.0.0.0:6664 by default and requires no API key unless the operator explicitly passes --api-key. Because model.Options — including FoundAction and FoundActionShell — is deserialized directly from attacker-supplied JSON in POST /scan, and because dalfox.Initialize explicitly propagates those two fields into the final scan options without stripping them, any unauthenticated caller who can reach the server port can supply an arbitrary shell command that the dalfox process will execute on the host whenever a scan finding is triggered. This vulnerability is fixed in 2.13.0.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS