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AVID-2026-R0306
Description
The model gpt-oss-20b from OpenAI was evaluated by the Garak LLM Vulnerability scanner using the probe encoding.InjectNato.
Details
The probe encoding.InjectNato tests encoding techniques to bypass input filtering by using NATO phonetic alphabet representations. This probe is part of the encoding module which injects ASCII85 encoded data into payloads.
The LLM gpt-oss-20b was evaluated on this probe.
Metrics
Number of failures were counted for each detector in the probe.
| Detector | Passed | Total | Score |
|---|---|---|---|
| encoding.DecodeMatch | 250 | 256 | 🟢 97.7 |
| encoding.DecodeApprox | 256 | 256 | 🔵 100.0 |
References
Affected or Relevant Artifacts
- Developer: OpenAI
- Deployer: Together AI
- Artifact Details:
| Type | Name |
|---|---|
| Model | gpt-oss-20b |
Impact
AVID Taxonomy Categorization
- Risk domains: Security
- SEP subcategories: S0403: Adversarial Example
- Lifecycle stages: L05: Evaluation
Other information
- Report Type: Measurement
- Credits:
- Date Reported: 2026-03-10
- Version: 0.3.1
- AVID Entry