Advisory details:
gitlab / pypi/nltk/CVE-2026-79675
| Advisory ID | gitlab/pypi/nltk/CVE-2026-79675 |
| Aliases |
CVE-2026-79675
GHSA-m4rf-3fr8-xwx3 |
| Summary | NLTK: JVM argument injection bypass via per-call options in the NLTK Stanford wrappers (incomplete fix of CVE-2026-12841) An attacker who controls the `java_options` parameter to any NLTK Stanford wrapper class can inject arbitrary JVM flags, including: - `-agentpath:/path/to/malicious.so` -- loads a native agent, achieving arbitrary code execution - `-javaagent:/path/to/malicious.jar` -- loads a Java agent for bytecode manipulation - `-agentlib:jdwp=transport=dt_socket,server=y,address=*:5005` -- enables remote debugging, allowing remote code execution - `@/path/to/argfile` -- expands an argument file, which can smuggle any of the above This is exploitable in scenarios where NLTK is deployed as a service and `java_options` is derived from user input, configuration files, or environment variables. The PR #3647 commit message explicitly states the fix was intended to cover "StanfordSegmenter, and GenericStanfordParser" but the implementation only validates in `config_java()`. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 0.0 |
| Risk | |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | https://gitlab.com/gitlab-org/advisories-community/-/blob/main/pypi/nltk/CVE-2026-79675.yml |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
There are no SSVC decisions available.