Medium 4.4Published Apr 29, 2026

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

Updated under an hour ago (Oct 26, 2026, 11:23 AM ET)

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It affects berabuddies AgentFlow. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 4.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-346
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Jun 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

berabuddies AgentFlow berabuddies:agentflow (from the name)	before 1667fa3	CNA record

References

https://github.com/berabuddies/agentflow/pull/18issue-tracking
https://github.com/berabuddies/agentflow/commit/1667fa3patch
https://www.vulncheck.com/advisories/agentflow-local-web-api-content-type-validation-bypassthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.