CRITICAL

CVE-2026-79675

CVSS v3

9.8

CRITICAL

EPSS Score

0.8 %

exploit probability, as of 2026-10-16

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

nltkPyPIall versions · fixed in 3.10.3

Vendor advisories

CVE-2026-79675 Red Hat Product Security2 products fixed · 13 known affected
nltk: NLTK before 3.10.3 JVM Argument Injection via Per-Call Options
exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 as a component of Exploit Intelligence · lightspeed-core/lightspeed-stack-rhel9 as a component of Lightspeed Core · lightspeed-core/rag-tool-cpu-rhel9 as a component of Lightspeed Core
RHSA-2026:73987 Red Hat Product Security2 products fixed
Red Hat Security Advisory: RHOAI 3.3.7 - Red Hat OpenShift AI

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-08-25
Last Modified: 2026-08-26

Frequently asked questions

What is CVE-2026-79675?

Is CVE-2026-79675 actively exploited?

Active exploitation of CVE-2026-79675 has not been confirmed. Its EPSS score was 0.8% on 2026-10-16, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-79675?

CVE-2026-79675 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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