What is CVE-2026-79675?

CVE-2026-79675 is a critical-severity vulnerability in Nltk, classified under Argument Injection. CVSS score: 9.8/10. Published 2026-08-25.

How severe is CVE-2026-79675?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Nltk

CVE-2026-79675

NLTK before 3.10.3 fails to validate JVM options passed through the per-call options parameter in the java() function, allowing attackers to inject dangerous JVM flags. Attackers can supply malicious options like -agentpath, -javaagent, or @argfile to Stanford wrapper classes to achieve arbitrary code execution.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Nltk

Weakness classification (CWE)

CWE-88 — Argument Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-79675?: CVE-2026-79675 is a critical-severity vulnerability in Nltk, classified under Argument Injection. CVSS score: 9.8/10. Published 2026-08-25.
How severe is CVE-2026-79675?: Critical severity. CVSS v3 base score is 9.8 out of 10.