How severe is CVE-2026-79675?

CVE-2026-79675 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-79675 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-79675?

CVE-2026-79675 affects Nltk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-79675?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-79675 published?

CVE-2026-79675 was published on 2026-08-25 and last updated on 2026-09-01.

CVE-2026-79675

CVE-2026-79675 is a critical-severity vulnerability in Nltk with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-88.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-88
Affected product: Nltk
Published: 2026-08-25
Last modified: 2026-09-01

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-79675?: CVE-2026-79675 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-79675 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-79675?: CVE-2026-79675 affects Nltk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-79675?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-79675 published?: CVE-2026-79675 was published on 2026-08-25 and last updated on 2026-09-01.

References

Affected products (1)

cpe:2.3:a:nltk:nltk:*:*:*:*:*:*:*:*

More vulnerabilities in Nltk

CVE-2026-0848 — Critical (CVSS 10.0): NLTK versions <=3.9.2 are vulnerable to arbitrary code execution due to improper input validation in the…
CVE-2026-79657 — Critical (CVSS 9.8): NLTK versions before 3.10.3 contain a remote code execution vulnerability in allowlisted pickle loaders that trust…
CVE-2026-78683 — Critical (CVSS 9.6): NLTK before 3.10.0 (affected versions <=3.9.4) contains an unsafe pickle deserialization vulnerability in the…
CVE-2026-71513 — High (CVSS 8.8): NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle…
CVE-2025-14009 — High (CVSS 8.8): A critical vulnerability exists in the NLTK downloader component of nltk/nltk, affecting all versions. The _unzip_iter…
CVE-2026-79674 — High (CVSS 8.2): NLTK versions before 3.10.3 contain a path sandbox bypass vulnerability in corpus-reader constructors that allows…

All CVEs affecting Nltk →

Other CWE-88 (Argument Injection) vulnerabilities

CVE-2026-65770 — Critical (CVSS 10.0): Improper neutralization of argument delimiters in a command ('argument injection') in Azure Managed Instance for Apache…
CVE-2026-57572 — Critical (CVSS 10.0): Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, the Docker API server accepted…
CVE-2026-40281 — Critical (CVSS 10.0): Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint…
CVE-2023-6269 — Critical (CVSS 10.0): An argument injection vulnerability has been identified in the administrative web interface of the Atos Unify…
CVE-2007-0882 — Critical (CVSS 10.0): Argument injection vulnerability in the telnet daemon (in.telnetd) in Solaris 10 and 11 (SunOS 5.10 and 5.11)…
CVE-2004-0480 — Critical (CVSS 10.0): Argument injection vulnerability in IBM Lotus Notes 6.0.3 and 6.5 allows remote attackers to execute arbitrary code via…

Browse all CWE-88 (Argument Injection) vulnerabilities →