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TI-2026-32937 Aliases CVE-2026-45090GHSA-2g4x-fq3j-cgq4

Dalfox: Unauthenticated Remote DoS via Closed-Channel Write in `ParameterAnalysis` (server mode)

Priority HIGH 72CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-404.

Summary

Dalfox is a powerful open-source XSS scanner and utility focused on automation. Prior to 2.13.0, ParameterAnalysis in pkg/scanning/parameterAnalysis.go runs two sequential worker stages that both write to the same results channel. The channel is correctly closed after the first stage completes (close(results) at line 438), but the second stage — which processes POST-body parameters (dp) — is then launched with the same already-closed channel as its output. When a scanned parameter is reflected, processParams executes results <- paramResult on the closed channel, triggering a Go runtime panic that crashes the entire dalfox process. In server mode, the crash is remotely triggerable by any unauthenticated caller who can reach the REST API, because the default configuration has no API key and the second stage activates whenever options.Data != "" (i.e., the attacker supplies the data field) and the target reflects at least one parameter. This vulnerability is fixed in 2.13.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00273 19th percentileScored 2026-11-07
Fix Fixed dalfox (hahwul): 2.13.0github.com/hahwul/dalfox/v2 (Go): 2.13.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
hahwuldalfoxbefore 2.13.02.13.0Patch availableCNA
—github.com/hahwul/dalfox/v2 (Go)before 2.13.02.13.0Patch availableGHSA-2g4x-fq3j-cgq4
—github.com/hahwul/dalfox (Go)up to 1.2.2—No fix listedGHSA-2g4x-fq3j-cgq4
  • dalfox Vendorhahwul Affected before 2.13.0 Fixed in 2.13.0 Patch available CNA
  • github.com/hahwul/dalfox/v2 (Go) Vendor— Affected before 2.13.0 Fixed in 2.13.0 Patch available GHSA-2g4x-fq3j-cgq4
  • github.com/hahwul/dalfox (Go) Vendor— Affected up to 1.2.2 Fixed in — No fix listed GHSA-2g4x-fq3j-cgq4

Remediation

  • Fix · CNA dalfox (hahwul) Fixed in 2.13.0
  • Fix · GHSA-2g4x-fq3j-cgq4 github.com/hahwul/dalfox/v2 (Go) Fixed in 2.13.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45090
  2. 2026-10-03 Alias added: GHSA-2g4x-fq3j-cgq4

References

Advisory 1

Other 3

  • TI-2026-32934 Dalfox: Unauthenticated Remote Code Execution via `found-action` in Dalfox Server Mode CVSS 3.1CRITICAL 10.0
  • TI-2026-32936 Dalfox: Unauthenticated Arbitrary File Create/Append via `output` Option in Dalfox Server Mode CVSS 3.1HIGH 8.2
  • TI-2026-32935 Missing authentication in hahwul dalfox CVSS 3.1HIGH 7.5

Sources

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