VDB
CVE-2026-79675
CVE-2026-79675
PUBLISHED
CVSS 9.3 CRITICAL
Reported by VulnCheck · Published August 25, 2026
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.
Risk Scores
CVSS 4.0
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| nltk | nltk | 0, 3.10.3 |
| nltk | nltk | 0, 3.10.3 |
| PyPI | nltk | 0 |
| chainguard | open-webui | 0 |
| wolfi | open-webui | 0 |
| chainguard | nemo | 0 |
Timeline
- Aug 25, 2026 Coalition ESS Score
- Aug 25, 2026 CVE Published
- Aug 26, 2026 EPSS Score
- Aug 30, 2026 EPSS Score
- Sep 2, 2026 EPSS Score
- Sep 2, 2026 Security Advisory
- Sep 6, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
References
- GitHub Security Advisory (GHSA-m4rf-3fr8-xwx3) vendor-advisory
- VulnCheck Advisory: NLTK before 3.10.3 JVM Argument Injection via Per-Call Options third-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-79675 advisory
- https://github.com/advisories/GHSA-m4rf-3fr8-xwx3 advisory
- https://github.com/nltk/nltk/commit/8fa9650b6009aacfdebbc33d2a08d32c0858ea6c patch
- https://github.com/nltk/nltk/releases/tag/v3.10.3 url