PYSEC-2026-3749

vendorUSosv

view advisory published 2026-08-25Licence: CC-BY-4.0

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-79675US	critical9.8	0.78% (56th)	—	2026-08-25
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 c…

references

External citations — patches, advisories, analysis.

https://github.com/nltk/nltk/security/advisories/GHSA-m4rf-3fr8-xwx3EVIDENCE
https://www.vulncheck.com/advisories/nltk-before-jvm-argument-injection-via-per-call-optionsADVISORY

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