{"items":[{"id":"NVI-00018494","kind":"vulnerability","title":"Dalfox has an Unauthenticated Remote DoS via Closed-Channel Write in `ParameterAnalysis` (server mode)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-2g4x-fq3j-cgq4","CVE-2026-45090"],"plain_summary":"GitHub lists this reviewed advisory for github.com/hahwul/dalfox/v2, github.com/hahwul/dalfox. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-309843516c9e32aa05a4289886ceda32"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-08T20:12:46.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-309843516c9e32aa05a4289886ceda32"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-309843516c9e32aa05a4289886ceda32","url":"https://github.com/advisories/GHSA-2g4x-fq3j-cgq4","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-2g4x-fq3j-cgq4","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:51:53.608Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-309843516c9e32aa05a4289886ceda32"],"technology":"github.com/hahwul/dalfox/v2","known_exclusions":[],"conditions_summary":"## Summary\n\n`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.\n\n## Severity\n\n**High** (CVSS 3.1: 7.5)\n\n`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`\n\n- **Attack Vector:** Network — server binds to `0.0.0.0:6664` by default; reachable by any network peer.\n- **Attack Complexity:** Low — the attacker controls both trigger conditions: the `data` field that populates the second stage","public_affected_ranges":["<= 2.12.0"]},{"certainty":"source_listed","source_ids":["sr-309843516c9e32aa05a4289886ceda32"],"technology":"github.com/hahwul/dalfox","known_exclusions":[],"conditions_summary":"## Summary\n\n`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.\n\n## Severity\n\n**High** (CVSS 3.1: 7.5)\n\n`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`\n\n- **Attack Vector:** Network — server binds to `0.0.0.0:6664` by default; reachable by any network peer.\n- **Attack Complexity:** Low — the attacker controls both trigger conditions: the `data` field that populates the second stage","public_affected_ranges":["<= 1.2.2"]}],"null_published_at":"2026-11-07T07:07:39.843Z","source_updated_at":"2026-06-08T20:12:46.000Z","source_disclosed_at":"2026-05-12T15:08:40.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-07T00:51:53.608Z"}],"next_cursor":null,"snapshot_revision":"42594"}