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THREAT OPS › Threat News › [NVD] CVE-2026-65915 (MEDIUM 6.5) — NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files a

[NVD] CVE-2026-65915 (MEDIUM 6.5) — NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files a

mednvdPublished 2026-08-22

CVE-2026-65915 CVSS: 6.5 MEDIUM Published: 2026-08-22T15:16:19.500

NLTK versions before 3.10.0 contain a logic bug in FileSystemPathPointer.open() where the sandbox validation check compares a normalized path against itself, making the security check permanently inert. Attackers can pass file:// URLs to nltk.data.load() to read arbitrary files accessible to the process user, including credentials

MITRE ATT&CK techniques

CredentialsT1589.001

Indicators of compromise

CVE-2026-65915cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-65915