{"vulnerability": "cve-2026-6238", "sightings": [{"uuid": "0811bc64-3c94-473e-91c4-3d8c12f95ab9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-6238", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mklfyc2yf52v", "content": "", "creation_timestamp": "2026-04-28T20:22:13.002521Z"}, {"uuid": "a219b2a3-e6a2-4d33-be46-e8c823ef7236", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-6238", "type": "seen", "source": "https://bsky.app/profile/nixpkgssecuritychanges.gerbet.me/post/3mqf6dud3zz25", "content": "[Backport staging-26.05] glibc: fix CVE-2026-5435 and CVE-2026-6238\n\nhttps://github.com/NixOS/nixpkgs/pull/540777\n\n#security", "creation_timestamp": "2026-07-11T17:20:42.779058Z"}, {"uuid": "2edf0c55-c82c-4a49-8ee4-81ea8b5594fb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62389", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mqpftgvi3n2h", "content": "\ud83d\udfe0 CVE-2026-62389 - High (7.5)\n\nws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-62389/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-07-15T19:01:19.537058Z"}, {"uuid": "2369e5e2-f7f5-438f-b4c6-2506d8e54714", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62389", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mqphpekd522l", "content": "CVE-2026-62389 - ws\nCVE ID : CVE-2026-62389\n \n Published : July 15, 2026, 6:16 p.m. | 17\u00a0minutes ago\n \n Description : ws before 8.21.1 contains a memory exhaustion vulnerability in lib/receiver.js where the fragment guard only triggers when fragment count reaches maxFragments,...", "creation_timestamp": "2026-07-15T19:34:49.945015Z"}, {"uuid": "0bb2153d-d10a-4d30-b88a-928eb73ccfde", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62386", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mqsr5pk5ux2s", "content": "CVE-2026-62386 - Grav\nCVE ID : CVE-2026-62386\n \n Published : July 17, 2026, 2:18 a.m. | 16\u00a0minutes ago\n \n Description : The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 accepts JWT access tokens through the ?token= URL query parameter on every API route (JwtAut...", "creation_timestamp": "2026-07-17T03:01:53.896602Z"}, {"uuid": "27c6744f-9ede-4188-81c6-592b05a9d19c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62387", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mqstlcndcq2n", "content": "CVE-2026-62387 - Grav\nCVE ID : CVE-2026-62387\n \n Published : July 17, 2026, 2:18 a.m. | 1\u00a0hour, 17\u00a0minutes ago\n \n Description : The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 shipped Access-Control-Allow-Origin: * as its default CORS configuration on all resp...", "creation_timestamp": "2026-07-17T03:45:17.840912Z"}, {"uuid": "9c9cdad4-4519-4fce-a9da-d3e531c1f3e6", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62384", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mtpbkombhs24", "content": "\ud83d\udfe0 CVE-2026-62384 - High (7.5)\n\nNLTK versions before 3.10.2 contain a symlink-based sandbox bypass in FramenetCorpusReader that a...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-62384/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-08-22T22:00:25.784585Z"}, {"uuid": "fc912606-afb4-4b2a-9f51-4c045f58c40c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62388", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mtpbkvjz5w27", "content": "\ud83d\udfe0 CVE-2026-62388 - High (7.5)\n\nNLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validati...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-62388/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-08-22T22:00:33.163079Z"}, {"uuid": "5afe1ad2-42a0-479e-868a-ff68feeb0100", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62386", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3mqz2agxtub2j", "content": "\ud83d\udfe0 CVE-2026-62386 - High (7.5)\n\nThe Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 accepts JWT access tokens throug...\n\nhttps://www.thehackerwire.com/vulnerability/CVE-2026-62386/\n\n#infosec #cybersecurity #CVE #vulnerability #security #patchstack", "creation_timestamp": "2026-07-19T15:00:28.183959Z"}, {"uuid": "289081e0-375f-4a23-909c-4635211254b8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62384", "type": "seen", "source": "https://bsky.app/profile/hugovalters.bsky.social/post/3mtqqsekavk26", "content": "CVE-2026-62384 - Symlink sandbox bypass in NLTK FramenetCorpusReader. Arbitrary XML file read. CVSS 7.5. Update to 3.10.2 now. #CVE #NLTK #infosec\n\nhttps://www.valtersit.com/cve/CVE-2026-62384/", "creation_timestamp": "2026-08-23T12:06:00.024848Z"}, {"uuid": "4d0193de-ffb0-413f-91c3-4b8f26be58d3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62384", "type": "seen", "source": "https://mastodon.social/users/hugovalters/statuses/117144732717578827", "content": "CVE-2026-62384 - Symlink sandbox bypass in NLTK FramenetCorpusReader. Arbitrary XML file read. CVSS 7.5. Update to 3.10.2 now. #CVE #NLTK #infosec\nhttps://www.valtersit.com/cve/CVE-2026-62384/", "creation_timestamp": "2026-08-23T12:06:07.341276Z"}, {"uuid": "f4f014c9-da23-4fc2-a1f4-4372775326f1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62384", "type": "seen", "source": "https://bsky.app/profile/hugovalters.bsky.social/post/3mtrbmyztzm26", "content": "CVE-2026-62384 - Symlink sandbox bypass in NLTK leads to arbitrary file read. CVSS 7.5. Update to version 3.10.2 now. #CVE #Python #infosec\n\nhttps://www.valtersit.com/cve/CVE-2026-62384/", "creation_timestamp": "2026-08-23T17:07:03.595302Z"}, {"uuid": "94eadc7a-c7af-434e-bae0-50f96e26f7eb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62384", "type": "seen", "source": "https://mastodon.social/users/hugovalters/statuses/117145916115746198", "content": "CVE-2026-62384 - Symlink sandbox bypass in NLTK leads to arbitrary file read. CVSS 7.5. Update to version 3.10.2 now. #CVE #Python #infosec\nhttps://www.valtersit.com/cve/CVE-2026-62384/", "creation_timestamp": "2026-08-23T17:07:05.729871Z"}, {"uuid": "61b50297-e613-45c9-ac55-a081883fb90b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62388", "type": "seen", "source": "https://bsky.app/profile/cyberhub.blog/post/3mu4nfwaa6c24", "content": "\ud83d\udccc CVE-2026-62388 - NLTK versions before 3.10.0 default to ENFORCE=False in pathsec.py, causing all security validation functions to emit warnings instead of raising exce... https://www.cyberhub.blog/cves/CVE-2026-62388", "creation_timestamp": "2026-08-28T05:37:06.879733Z"}, {"uuid": "67398cba-8556-4549-bc08-94c5851fb05a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-62388", "type": "published-proof-of-concept", "source": "https://github.com/advisories/GHSA-p3m8-78j2-g5p3", "content": "", "creation_timestamp": "2026-09-02T16:35:03.055139Z"}, {"uuid": "bb6a145f-e900-4891-bf5a-f05bca9f39f7", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-62388", "type": "seen", "source": "https://gist.github.com/alon710/c7b1744220c73bf5f0357a6534139cbd", "content": "# CVE-2026-62388: CVE-2026-62388: Insecure Default Security Enforcement in Natural Language Toolkit (NLTK) Path Security Module\n\n> **CVSS Score:** 7.5\n> **Published:** 2026-09-02\n> **Full Report:** https://cvereports.com/reports/CVE-2026-62388\n\n## Summary\nCVE-2026-62388 represents a critical design flaw in the Natural Language Toolkit (NLTK) before version 3.10.0. The central security module (`nltk/pathsec.py`) initialized its validation enforcement flag to false by default. This fail-open configuration rendered security controls\u2014such as path traversal checks, zip archive audits, and SSRF validations\u2014non-blocking, only emitting warnings while permitting arbitrary file operations and code execution.\n\n## TL;DR\nNLTK versions prior to 3.10.0 initialized path security in an inactive 'fail-open' state by default, allowing attackers to bypass path traversal, SSRF, and zip-extraction protections.\n\n## Exploit Status: POC\n\n## Technical Details\n\n- **CWE ID**: CWE-1188\n- **Attack Vector**: Network\n- **CVSS v3.1 Score**: 7.5 (High)\n- **CVSS v4.0 Score**: 8.7 (High)\n- **EPSS Score**: 0.00457\n- **Exploit Status**: PoC / Structural Bypass documented\n- **KEV Status**: Not Listed\n\n## Affected Systems\n\n- Natural Language Toolkit (NLTK)\n- **NLTK**: < 3.10.0 (Fixed in: `3.10.0`)\n\n## Mitigation\n\n- Upgrade NLTK to version 3.10.0 or later.\n- Programmatically override the enforcement state via nltk.pathsec.ENFORCE = True in application entrypoints.\n- Implement network-level egress filtering to prevent SSRF vulnerabilities resulting from resource retrieval.\n- Configure Python's warning filters to raise errors on RuntimeWarnings triggered by NLTK's security validations.\n\n**Remediation Steps:**\n1. Identify all active deployments using NLTK versions prior to 3.10.0.\n2. Execute 'pip install --upgrade nltk>=3.10.0' to obtain the patched release.\n3. Verify the fix by checking that 'nltk.pathsec.ENFORCE' evaluates to True under default initialization.\n4. For systems where upgrading is deferred, inject a configuration script at bootstrap: 'import nltk.pathsec; nltk.pathsec.ENFORCE = True'.\n\n## References\n\n- [GitHub Security Advisory GHSA-p3m8-78j2-g5p3](https://github.com/nltk/nltk/security/advisories/GHSA-p3m8-78j2-g5p3)\n- [VulnCheck Security Advisory](https://www.vulncheck.com/advisories/nltk-before-insecure-default-configuration-pathsec)\n- [NLTK Fix Commit](https://github.com/nltk/nltk/commit/155e40343cff0bf50d233e274a12e04d1428b1d9)\n- [NLTK Pull Request #3593](https://github.com/nltk/nltk/pull/3593)\n- [NLTK Release v3.10.0](https://github.com/nltk/nltk/releases/tag/v3.10.0)\n\n\n---\n*Generated by [CVEReports](https://cvereports.com/reports/CVE-2026-62388) - Automated Vulnerability Intelligence*", "creation_timestamp": "2026-09-02T20:32:56.832446Z"}]}