{"items":[{"id":"NVI-00015140","kind":"vulnerability","title":"Apache HttpComponents Core: HPackDecoder Unlimited Header List Size Before SETTINGS ACK","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-v3jc-474w-2wm6","CVE-2026-54428"],"plain_summary":"GitHub lists this reviewed advisory for org.apache.httpcomponents.core5:httpcore5-h2, org.apache.httpcomponents.core5:httpcore5-h2. 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-2b64906bd1c56581e3813a3886e0eeec"],"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":"2026-08-13T18:27:17.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-2b64906bd1c56581e3813a3886e0eeec"}],"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-2b64906bd1c56581e3813a3886e0eeec","url":"https://github.com/advisories/GHSA-v3jc-474w-2wm6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-v3jc-474w-2wm6","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-2b64906bd1c56581e3813a3886e0eeec"],"technology":"org.apache.httpcomponents.core5:httpcore5-h2","known_exclusions":[],"conditions_summary":"Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.","public_affected_ranges":["< 5.4.3"]},{"certainty":"source_listed","source_ids":["sr-2b64906bd1c56581e3813a3886e0eeec"],"technology":"org.apache.httpcomponents.core5:httpcore5-h2","known_exclusions":[],"conditions_summary":"Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.","public_affected_ranges":[">= 5.5-alpha1, < 5.5-beta2"]}],"null_published_at":"2026-11-03T10:03:26.553Z","source_updated_at":"2026-08-13T18:27:17.000Z","source_disclosed_at":"2026-07-01T18:31:56.000Z","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":"2026-11-02T20:16:47.162Z"}],"next_cursor":null,"snapshot_revision":"42594"}