{"id":"CVE-2026-62388","aliases":["DEBIAN-CVE-2026-62388","EUVD-2026-64336","GHSA-8vh5-mgjj-w6hg","GHSA-p3m8-78j2-g5p3","MGASA-2026-0340","PYSEC-2026-3722","UBUNTU-CVE-2026-62388"],"status":"published","title":"NLTK before 3.10.0 Insecure Default Configuration in pathsec.py","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00512,"percentile":0.4398,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1188"],"published":"2026-08-22T14:12:38Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"PyPI","package":"nltk","fixed_in":["3.10.0"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:14","package":"nltk","fixed_in":["3.10.0-1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.9.4"},{"fixed":"3.10.0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.10.0-1","3.10.1-1","3.10.3-1","3.8-1","3.8.1-1","3.9.1-1","3.9.1-2","3.9.2-1","3.9.3-1"]},{"source":"osv","ecosystem":"Debian:13","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.10.0-1","3.10.1-1","3.10.3-1","3.9.1-2","3.9.2-1","3.9.3-1"]},{"source":"osv","ecosystem":"Debian:14","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.0-1"}]}],"versions":["3.9.1-2","3.9.2-1","3.9.3-1"]},{"source":"osv","ecosystem":"PyPI","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.0"}]}],"versions":["0.8","0.9","0.9.3","0.9.4","0.9.5","0.9.6","0.9.7","0.9.8","0.9.9","2.0.1","2.0.1rc1","2.0.1rc2-git","2.0.1rc3","2.0.1rc4","2.0.2","2.0.3","2.0.4","2.0.5","2.0b4","2.0b5","2.0b6","2.0b7","2.0b8","2.0b9","3.0.0","3.0.0b1","3.0.0b2","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.1","3.2","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.3","3.4","3.4.1","3.4.2","3.4.3","3.4.4","3.4.5","3.5","3.5b1","3.6","3.6.1","3.6.2","3.6.3","3.6.4","3.6.5","3.6.6","3.6.7","3.7","3.8","3.8.1","3.9","3.9.1","3.9.2","3.9.3","3.9.4","3.9b1"]},{"source":"osv","ecosystem":"Mageia:10","package":"python-nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.3-1.mga10"}]}],"bundled":18},{"source":"osv","ecosystem":"Mageia:9","package":"python-nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.3-1.mga9"}]}],"bundled":18},{"source":"osv","ecosystem":"PyPI","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.0"}]}],"versions":["0.8","0.9","0.9.3","0.9.4","0.9.5","0.9.6","0.9.7","0.9.8","0.9.9","2.0.1","2.0.1rc1","2.0.1rc2-git","2.0.1rc3","2.0.1rc4","2.0.2","2.0.3","2.0.4","2.0.5","2.0b4","2.0b5","2.0b6","2.0b7","2.0b8","2.0b9","3.0.0","3.0.0b1","3.0.0b2","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.1","3.2","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5","3.3","3.4","3.4.1","3.4.2","3.4.3","3.4.4","3.4.5","3.5","3.5b1","3.6","3.6.1","3.6.2","3.6.3","3.6.4","3.6.5","3.6.6","3.6.7","3.7","3.8","3.8.1","3.9","3.9.1","3.9.2","3.9.3","3.9.4","3.9b1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0~b9-0ubuntu4","2.0~b9-0ubuntu4.1~esm2","2.0~b9-0ubuntu4.1~esm4","2.0~b9-0ubuntu4.1~esm5","2.0~b9-0ubuntu4.1~esm6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-1","3.0.5-1","3.1-1","3.1-1ubuntu0.1","3.1-1ubuntu0.1+esm1","3.1-1ubuntu0.1+esm2","3.1-1ubuntu0.1+esm3","3.1-1ubuntu0.1+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.4-1","3.2.5-1","3.2.5-1ubuntu0.1","3.2.5-1ubuntu0.1+esm1","3.2.5-1ubuntu0.1+esm2","3.2.5-1ubuntu0.1+esm3","3.2.5-1ubuntu0.1+esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.5-1","3.4.5-2","3.4.5-2ubuntu0.1~esm1","3.4.5-2ubuntu0.1~esm2","3.4.5-2ubuntu0.1~esm3","3.4.5-2ubuntu0.1~esm4"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5-1","3.6.5-1","3.6.7-1","3.7-1","3.7-1ubuntu0.1~esm1","3.7-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.8.1-1","3.8.1-1ubuntu0.1~esm1","3.8.1-1ubuntu0.1~esm2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.9.2-1","3.9.3-1","3.10.0-1","3.10.1-1","3.10.3-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"nltk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.9.1-2","3.9.1-2build1","3.9.2-1","3.9.2-1ubuntu0.1~esm1","3.9.2-1ubuntu0.1~esm2"]}],"products":[{"vendor":"nltk","product":"nltk"}],"references":[{"url":"https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3","tags":["vendor-advisory","exploit","Exploit","Mitigation","Vendor Advisory","advisory","web","evidence"]},{"url":"https://www.vulncheck.com/advisories/nltk-before-insecure-default-configuration-pathsec","tags":["third-party-advisory","Third Party Advisory","advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62388","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8vh5-mgjj-w6hg"},{"url":"https://github.com/nltk/nltk/pull/3593","tags":["web"]},{"url":"https://github.com/nltk/nltk/commit/155e40343cff0bf50d233e274a12e04d1428b1d9","tags":["web"]},{"url":"https://github.com/nltk/nltk/releases/tag/v3.10.0","tags":["web"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/nltk/PYSEC-2026-3722.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-p3m8-78j2-g5p3"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62388.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-62388","tags":["advisory"]},{"url":"https://github.com/nltk/nltk","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2026-0340.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=36186","tags":["report"]},{"url":"https://github.com/nltk/nltk/releases#release-v3.10.0","tags":["web"]},{"url":"https://github.com/nltk/nltk/releases#release-v3.10.2","tags":["web"]},{"url":"https://github.com/nltk/nltk/releases#release-v3.10.3","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2026-62388","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-62388","tags":["report"]},{"url":"https://github.com/nltk/nltk/security/advisories/ghsa-p3m8-78j2-g5p3","tags":["report"]},{"url":"https://security-tracker.debian.org/tracker/cve-2026-62388","tags":["report"]},{"url":"https://github.com/cveproject/cvelistv5/tree/main/cves/2026/62xxx/cve-2026-62388.json","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/cve-2026-62388","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-62388","title":"NLTK before 3.10.0 Insecure Default Configuration in pathsec.py","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T14:12:38.647Z","modified":"2026-08-29T11:47:32.048Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:20:14.665567Z"}],"euvd":[{"id":"EUVD-2026-64336","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T14:12:38Z","modified":"2026-08-29T11:47:32Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:21.947009Z"}],"ghsa":[{"id":"GHSA-8vh5-mgjj-w6hg","title":"Duplicate Advisory: [CWE-1188] Default ENFORCE=False Disables All pathsec Security Controls","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-p3m8-78j2-g5p3. This link is maintained to preserve external references.\n\n## Original Description\nNLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"withdrawn","published":"2026-08-22T15:31:03Z","modified":"2026-09-02T15:40:10Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:41:11.621873Z"},{"id":"GHSA-p3m8-78j2-g5p3","title":"NLTK: Default ENFORCE=False Disables All pathsec Security Controls","description":"NLTK's pathsec.py security module defaults to ENFORCE=False (line 24), which means all 8 security validation functions only emit RuntimeWarning instead of raising exceptions when violations are detected.\n\nThe pathsec module was introduced as the fix for CVE-2024-39705 (arbitrary code execution via pickle) and CVE-2026-0846 (path traversal). However, with ENFORCE=False as the default:\n\n1. pathsec.open('/etc/passwd') succeeds (reads the file, emits warning)\n2. pathsec.validate_network_url('http://169.254.169.254/...') succeeds (warning only)\n3. pickle.loads() via nltk.data.load() proceeds despite unsafe source (warning only)\n\nEvery security gate follows the same pattern:\n```python\nENFORCE = os.environ.get('NLTK_PATHSEC_ENFORCE', '').lower() in ('1', 'true', 'yes')\n\ndef validate_something(path):\n    if is_violation(path):\n        if ENFORCE:\n            raise SecurityError('...')  # Only raised when env var is set\n        else:\n            warnings.warn('...', RuntimeWarning)  # Default: warning only\n    # Execution continues regardless\n```\n\nThis means the security remediations for CVE-2024-39705 and CVE-2026-0846 are effectively disabled by default. Any user who installed NLTK 3.9.x expecting the security fixes to be active is still vulnerable unless they manually set NLTK_PATHSEC_ENFORCE=1.\n\nPoC:\n```python\nimport nltk.pathsec\nimport warnings\n\n# Show that ENFORCE is False by default\nprint(f'ENFORCE = {nltk.pathsec.ENFORCE}')  # False\n\n# Attempt to read /etc/passwd through pathsec -- should be blocked\nwith warnings.catch_warnings(record=True) as w:\n    warnings.simplefilter('always')\n    result = nltk.pathsec.open('/etc/passwd', 'r')\n    print(f'File opened: {result.name}')  # /etc/passwd\n    print(f'Warning emitted: {w[0].message}')  # RuntimeWarning (not an exception)\n    # Attack succeeds -- file is readable\n```\n\nThe correct default is fail-secure: ENFORCE should be True unless explicitly disabled. The current default makes the security module opt-in rather than opt-out, defeating its purpose.\n\nSuggested fix: Change default to ENFORCE=True. Users who need backwards compatibility can set NLTK_PATHSEC_ENFORCE=0 to explicitly disable.","status":"published","published":"2026-09-02T15:40:33Z","modified":"2026-10-27T07:57:48Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:41:36.858527Z"}],"nvd":[{"id":"CVE-2026-62388","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T15:16:18.967Z","modified":"2026-10-14T13:10:00.187Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T14:12:40.665005Z"}],"osv":[{"id":"CVE-2026-62388","title":"NLTK before 3.10.0 Insecure Default Configuration in pathsec.py","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T14:12:38.647Z","modified":"2026-10-28T02:30:59.088244022Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T15:45:13.306117Z"},{"id":"DEBIAN-CVE-2026-62388","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T15:16:18.967Z","modified":"2026-10-15T09:47:38.835468743Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:45:57.932517Z"},{"id":"GHSA-8vh5-mgjj-w6hg","title":"Duplicate Advisory: [CWE-1188] Default ENFORCE=False Disables All pathsec Security Controls","description":"## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-p3m8-78j2-g5p3. This link is maintained to preserve external references.\n\n## Original Description\nNLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"withdrawn","published":"2026-08-22T15:31:03Z","modified":"2026-09-02T16:00:17.573915906Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T15:46:42.78452Z"},{"id":"GHSA-p3m8-78j2-g5p3","title":"NLTK: Default ENFORCE=False Disables All pathsec Security Controls","description":"NLTK's pathsec.py security module defaults to ENFORCE=False (line 24), which means all 8 security validation functions only emit RuntimeWarning instead of raising exceptions when violations are detected.\n\nThe pathsec module was introduced as the fix for CVE-2024-39705 (arbitrary code execution via pickle) and CVE-2026-0846 (path traversal). However, with ENFORCE=False as the default:\n\n1. pathsec.open('/etc/passwd') succeeds (reads the file, emits warning)\n2. pathsec.validate_network_url('http://169.254.169.254/...') succeeds (warning only)\n3. pickle.loads() via nltk.data.load() proceeds despite unsafe source (warning only)\n\nEvery security gate follows the same pattern:\n```python\nENFORCE = os.environ.get('NLTK_PATHSEC_ENFORCE', '').lower() in ('1', 'true', 'yes')\n\ndef validate_something(path):\n    if is_violation(path):\n        if ENFORCE:\n            raise SecurityError('...')  # Only raised when env var is set\n        else:\n            warnings.warn('...', RuntimeWarning)  # Default: warning only\n    # Execution continues regardless\n```\n\nThis means the security remediations for CVE-2024-39705 and CVE-2026-0846 are effectively disabled by default. Any user who installed NLTK 3.9.x expecting the security fixes to be active is still vulnerable unless they manually set NLTK_PATHSEC_ENFORCE=1.\n\nPoC:\n```python\nimport nltk.pathsec\nimport warnings\n\n# Show that ENFORCE is False by default\nprint(f'ENFORCE = {nltk.pathsec.ENFORCE}')  # False\n\n# Attempt to read /etc/passwd through pathsec -- should be blocked\nwith warnings.catch_warnings(record=True) as w:\n    warnings.simplefilter('always')\n    result = nltk.pathsec.open('/etc/passwd', 'r')\n    print(f'File opened: {result.name}')  # /etc/passwd\n    print(f'Warning emitted: {w[0].message}')  # RuntimeWarning (not an exception)\n    # Attack succeeds -- file is readable\n```\n\nThe correct default is fail-secure: ENFORCE should be True unless explicitly disabled. The current default makes the security module opt-in rather than opt-out, defeating its purpose.\n\nSuggested fix: Change default to ENFORCE=True. Users who need backwards compatibility can set NLTK_PATHSEC_ENFORCE=0 to explicitly disable.","status":"published","published":"2026-09-02T15:40:33Z","modified":"2026-09-02T16:00:17.572328596Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-1188"],"updated_at":"2026-11-02T15:46:52.534897Z"},{"id":"PYSEC-2026-3722","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T15:16:18.967Z","modified":"2026-08-28T02:30:02.701073183Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"}],"updated_at":"2026-11-02T15:52:57.255153Z"},{"id":"UBUNTU-CVE-2026-62388","description":"NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exceptions. Attackers can bypass path traversal and pickle deserialization protections by exploiting the disabled security controls that are only active when manually enabled.","status":"published","published":"2026-08-22T15:16:00Z","modified":"2026-10-17T13:00:30.351110485Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:43.630667Z"},{"id":"MGASA-2026-0340","title":"Updated python-nltk packages fix security vulnerabilities","description":"Updated packages fix security vulnerabilities. Please see the links.\n","status":"published","published":"2026-08-29T15:47:31Z","modified":"2026-08-29T16:00:02.787972151Z","updated_at":"2026-11-02T15:49:43.795591Z"}]}}