CVE-2026-7439

AgentFlow Local Web API Content-Type Validation Bypass

MEDIUM
4.4
CVSS Score
Published: April 29, 2026 at 06:06 PM UTC
Updated: October 26, 2026 at 08:10 PM UTC
1 product affected across 1 vendorAgentFlow

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Severity
MEDIUM4.4
Exploit prediction
EPSS 0.1%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1667fa3
Affected range stops below 1667fa3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.4MEDIUMVulnCheck
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-346

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