Agenta's Server-Side Template Injection (SSTI) via custom evaluator Jinja2 templates allows RCE
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-1336.
Summary
Agenta is an open-source LLMOps platform. A Server-Side Template Injection (SSTI) vulnerability exists in versions prior to 0.86.8 in Agenta's API server evaluator template rendering. Although the vulnerable code lives in the SDK package, it is executed server-side within the API process when running evaluators. This does not affect standalone SDK usage — it only impacts self-hosted or managed Agenta platform deployments. Version 0.86.8 contains a fix for the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Agenta-AI | agenta | before 0.86.8 | 0.86.8 | Patch available | CNA |
- agenta VendorAgenta-AI Affected before 0.86.8 Fixed in 0.86.8 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:agentatech:agenta:*:*:*:*:*:*:*:* | before 0.86.8 | Vulnerable | Agentatech |
- cpe:2.3:a:agentatech:agenta:*:*:*:*:*:*:*:* Versions before 0.86.8 Vulnerable ·Agentatech
Remediation
- Fix · CNA agenta (Agenta-AI) Fixed in 0.86.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-27961
References
More Agenta-AI vulnerabilities
- TI-2026-85966 Server-side request forgery in Agenta lets members steal secret tokens CVSS 4.0HIGH 8.4
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences