AgentFlow Local Web API Content-Type Validation Bypass
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-346.
Summary
AgentFlow's local web API accepts non-JSON content types on POST /api/runs and POST /api/runs/validate endpoints without enforcing application/json validation, allowing attackers to bypass trust-boundary enforcement on sensitive operations. Attackers can exploit this content-type validation weakness through browser-driven or local cross-origin requests to abuse the localhost API and enable attack chains against the local control plane.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
No affected products listed by the sources yet.
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
berabuddies AgentFlow 1667fa3
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-06562 AgentFlow Arbitrary Python Pipeline Execution via pipeline_pathPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2026-7439
- 2026-10-03 Alias added: GHSA-7vgq-6q52-5p23
References
More berabuddies vulnerabilities
- TI-2026-06562 AgentFlow Arbitrary Python Pipeline Execution via pipeline_path CVSS 4.0HIGH 7.7
Sources
- CVE-2026-7439 · CVE Program
- CVE-2026-7439 · NVD
- FIRST EPSS
- GHSA-7vgq-6q52-5p23 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences