by Kastro
Paper/Archive/CVE-2026-79675

CVE-2026-79675

nltk nltk — NLTK before 3.10.3 JVM Argument Injection via Per-Call Options

EPSS 0.8%public exploitCVSS 9.8
critical.is priorityof 100
51
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 55.8.558 × 2011.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
nltk< 3.10.33.10.3CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

advisorygithub.com/nltk/nltk/security/advisories/GHSA-m4rf-3fr8-xwx3writeupvulncheck.com/advisories/nltk-before-jvm-argument-injection-via-per-call-options