CVE-2026-63312
Last modified
CVE-2026-63312 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open() directly instead of pathsec.open(). Attackers who control the fileid argument can read arbitrary local files regardless of the ENFORCE setting, including sensitive system files and application credentials.. EPSS estimates a 0.49% chance of exploitation in the next 30 days.
Description
NLTK before 3.10.0 contains an arbitrary local file read vulnerability in StreamBackedCorpusView that bypasses pathsec.ENFORCE by calling builtins.open() directly instead of pathsec.open(). Attackers who control the fileid argument can read arbitrary local files regardless of the ENFORCE setting, including sensitive system files and application credentials.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nltk | Nltk | < 3.10.0 |
References
- https://github.com/nltk/nltk/security/advisories/GHSA-x5ph-mj9p-rfr8Exploit, Vendor Advisory
- https://github.com/nltk/nltk/security/advisories/GHSA-x5ph-mj9p-rfr8Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-63312?
How severe is CVE-2026-63312?
How do I fix CVE-2026-63312?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-63307Chat2DB before 5.3.0 contains an insecure direct object refe…7.1
- CVE-2026-63308Helm through 4.2.3, fixed in commit ba6c9a2, contains a deni…6.5
- CVE-2026-63309SurrealDB before 3.1.5 fail to apply field-level SELECT perm…4.3
- CVE-2026-6331HMAC zero-length tag forgery in EVP_DigestVerifyFinal, where…7.5
- CVE-2026-63310NLTK before 3.9.3 fails to verify file integrity after downl…6.5
- CVE-2026-63311NLTK before 3.10.0 (affected versions <= 3.9.4) contains a s…5.3
- CVE-2026-633139Router before 0.4.72 contains a server-side request forgery…8.3
- CVE-2026-63317Arbitrary Class Instantiation via XML Feature Generator Desc…5.6
- CVE-2026-6332CWE-312: Cleartext Storage of Sensitive Information vulnerab…7.5
- CVE-2026-63328Trivy is a security scanner. Prior to 0.72.0, plugin manifes…6.8
- CVE-2026-6333Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fa…5
- CVE-2026-63335The RabbitMQ Java client library allows Java and JVM-based a…6.3
Are you affected by CVE-2026-63312?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST