{"items":[{"id":"NVI-00013808","kind":"vulnerability","title":"NLTK: Symlink-based sandbox bypass in FramenetCorpusReader (bypasses the fix for CVE-2026-54292)","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-f833-7jw8-xwrv","CVE-2026-62384"],"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-69c0d384d087ad74c4f1fcc35457bd3a"],"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":"2026-09-08T16:39:28.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0882d24d20aee6fc7a98dba3c8cbb96b"},{"kind":"CVSS","as_of":"2026-10-14T13:10:00.187Z","value":"7.5 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-69c0d384d087ad74c4f1fcc35457bd3a"},{"kind":"CVSS","as_of":"2026-10-14T13:10:00.187Z","value":"8.7 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-69c0d384d087ad74c4f1fcc35457bd3a"}],"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-0882d24d20aee6fc7a98dba3c8cbb96b","url":"https://github.com/advisories/GHSA-f833-7jw8-xwrv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f833-7jw8-xwrv","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:20:31.767Z"},{"id":"sr-69c0d384d087ad74c4f1fcc35457bd3a","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62384","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-62384","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T15:07:15.902Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0882d24d20aee6fc7a98dba3c8cbb96b"],"technology":"nltk","known_exclusions":[],"conditions_summary":"This is a **new, distinct vulnerability**: a bypass of the fix already published as GHSA-xh95-f55m-82fw (\"Path traversal in NLTK FramenetCorpusReader.frame() allows arbitrary XML file read, bypassing the nltk.pathsec sandbox\"), not a duplicate of it.\n\n## Summary\n\nThe original advisory was fixed (PR #3581) by adding `_reject_unsafe_path_component()`, which blocks literal `/`, `\\`, `..`, and Windows drive prefixes in caller-/corpus-supplied names. It never resolves symlinks. All three call sites that use this guard still resolve the resulting path through `self.abspath()` (`nltk/corpus/reader/api.py`, `self._root.join(fileid)`), which is a plain lexical join, not the symlink-resolving, `required_root`-scoped check that `CorpusReader.open()` (and `NKJPCorpusReader`'s own fix for its sibling advisory) correctly use elsewhere in this same codebase.\n\nA symlink placed inside the corpus's own subdirectory, with a name containing no separators at all, passes the guard cleanly and reads a file completely outside the corpus root.\n\n## Affected code (`nltk/corpus/reader/framenet.py`","public_affected_ranges":[">= 3.10.0, < 3.10.2"]}],"null_published_at":"2026-11-08T19:53:44.065Z","source_updated_at":"2026-09-08T16:39:28.000Z","source_disclosed_at":"2026-09-08T16:39:24.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-02T02:20:31.767Z"},{"id":"NVI-00013808","kind":"vulnerability","title":"NLTK: Symlink-based sandbox bypass in FramenetCorpusReader (bypasses the fix for CVE-2026-54292)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f833-7jw8-xwrv","CVE-2026-62384"],"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-0882d24d20aee6fc7a98dba3c8cbb96b"],"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":"2026-09-08T16:39:28.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-0882d24d20aee6fc7a98dba3c8cbb96b"}],"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-0882d24d20aee6fc7a98dba3c8cbb96b","url":"https://github.com/advisories/GHSA-f833-7jw8-xwrv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f833-7jw8-xwrv","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T02:20:31.767Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0882d24d20aee6fc7a98dba3c8cbb96b"],"technology":"nltk","known_exclusions":[],"conditions_summary":"This is a **new, distinct vulnerability**: a bypass of the fix already published as GHSA-xh95-f55m-82fw (\"Path traversal in NLTK FramenetCorpusReader.frame() allows arbitrary XML file read, bypassing the nltk.pathsec sandbox\"), not a duplicate of it.\n\n## Summary\n\nThe original advisory was fixed (PR #3581) by adding `_reject_unsafe_path_component()`, which blocks literal `/`, `\\`, `..`, and Windows drive prefixes in caller-/corpus-supplied names. It never resolves symlinks. All three call sites that use this guard still resolve the resulting path through `self.abspath()` (`nltk/corpus/reader/api.py`, `self._root.join(fileid)`), which is a plain lexical join, not the symlink-resolving, `required_root`-scoped check that `CorpusReader.open()` (and `NKJPCorpusReader`'s own fix for its sibling advisory) correctly use elsewhere in this same codebase.\n\nA symlink placed inside the corpus's own subdirectory, with a name containing no separators at all, passes the guard cleanly and reads a file completely outside the corpus root.\n\n## Affected code (`nltk/corpus/reader/framenet.py`","public_affected_ranges":[">= 3.10.0, < 3.10.2"]}],"null_published_at":"2026-11-02T10:00:37.153Z","source_updated_at":"2026-09-08T16:39:28.000Z","source_disclosed_at":"2026-09-08T16:39:24.000Z","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":"2026-11-02T02:20:31.767Z"}],"next_cursor":null,"snapshot_revision":"42594"}