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AVID-2026-R0359
Description
The model gpt-oss-20b from OpenAI was evaluated by the Garak LLM Vulnerability scanner using the probe promptinject.HijackLongPrompt.
Details
The probe promptinject.HijackLongPrompt tests the system’s vulnerability to long prompt hijacking attacks. This probe is part of the promptinject module which detects and analyzes prompt injection attacks.
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 |
|---|---|---|---|
| promptinject.AttackRogueString | 253 | 256 | 🟢 98.8 |
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