CVE-2026-7439 MEDIUM

CVE-2026-7439: AgentFlow Local Web API Content-Type Validation Bypass

Vendor Berabuddies
Product AgentFlow
Weakness CWE-346 · Origin validation
Published April 29, 2026
Last update April 29, 2026
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 29, 2026 CVE published
April 29, 2026 Record updated