{"items":[{"id":"NVI-00015379","kind":"vulnerability","title":"Duplicate Advisory: Entity-expansion DoS (billion laughs) via remaining raw ElementTree parses (CWE-776)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"withdrawn","identifiers":["GHSA-jx89-3qg8-p2mr"],"plain_summary":"GitHub lists this reviewed advisory for nltk. 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-627a569a4e8186e9f8afd7b6f6df1b57"],"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":"2026-09-02T14:39:56.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-627a569a4e8186e9f8afd7b6f6df1b57"}],"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-627a569a4e8186e9f8afd7b6f6df1b57","url":"https://github.com/advisories/GHSA-jx89-3qg8-p2mr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-jx89-3qg8-p2mr","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:21:43.711Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-627a569a4e8186e9f8afd7b6f6df1b57"],"technology":"nltk","known_exclusions":[],"conditions_summary":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-97qj-x29f-37w7. This link is maintained to preserve external references.\n\n## Original Description\n\nNLTK versions before 3.10.3 use xml.etree.ElementTree to parse XML in multiple modules, which honors entity declarations in document DTDs. Attackers can craft XML payloads with nested entity declarations that expand from hundreds of bytes to megabytes in memory, causing denial of service.","public_affected_ranges":["<= 3.10.2"]}],"null_published_at":"2026-11-03T10:03:31.361Z","source_updated_at":"2026-09-02T14:39:56.000Z","source_disclosed_at":"2026-08-25T03:32:11.000Z","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":"2026-11-02T02:21:43.711Z"}],"next_cursor":null,"snapshot_revision":"42594"}