{"items":[{"id":"NVI-00018328","kind":"vulnerability","title":"Django vulnerable to ASGI header spoofing via underscore/hyphen conflation","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-mvfq-ggxm-9mc5","CVE-2026-3902"],"plain_summary":"GitHub lists this reviewed advisory for Django, Django, Django. 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-11bd75d1fc5e49c583ff6892d5a719d3"],"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":"2026-06-05T17:52:13.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-11bd75d1fc5e49c583ff6892d5a719d3"}],"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-11bd75d1fc5e49c583ff6892d5a719d3","url":"https://github.com/advisories/GHSA-mvfq-ggxm-9mc5","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-mvfq-ggxm-9mc5","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:52:58.259Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-11bd75d1fc5e49c583ff6892d5a719d3"],"technology":"Django","known_exclusions":[],"conditions_summary":"An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores.\n\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Tarek Nakkouch for reporting this issue.","public_affected_ranges":[">= 6.0, < 6.0.4"]},{"certainty":"source_listed","source_ids":["sr-11bd75d1fc5e49c583ff6892d5a719d3"],"technology":"Django","known_exclusions":[],"conditions_summary":"An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores.\n\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Tarek Nakkouch for reporting this issue.","public_affected_ranges":[">= 5.2, < 5.2.13"]},{"certainty":"source_listed","source_ids":["sr-11bd75d1fc5e49c583ff6892d5a719d3"],"technology":"Django","known_exclusions":[],"conditions_summary":"An issue was discovered in 6.0 before 6.0.4, 5.2 before 5.2.13, and 4.2 before 4.2.30. `ASGIRequest` allows a remote attacker to spoof headers by exploiting an ambiguous mapping of two header variants (with hyphens or with underscores) to a single version with underscores.\n\nEarlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.\nDjango would like to thank Tarek Nakkouch for reporting this issue.","public_affected_ranges":[">= 4.2, < 4.2.30"]}],"null_published_at":"2026-11-07T07:07:39.814Z","source_updated_at":"2026-06-05T17:52:13.000Z","source_disclosed_at":"2026-04-07T15:30:52.000Z","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":"2026-11-07T00:52:58.259Z"}],"next_cursor":null,"snapshot_revision":"42594"}