MEDIUM
CVE-2026-7439
CWE-346Published: April 29, 2026· Updated: Apr 30, 2026
4.4
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:0.3th
Official 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.
Technical Analysis
CVE-2026-7439 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
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GitHub PoC Search
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Rapid7 / Metasploit
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PacketStorm
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NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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All References (4)
Quick Facts
CVE IDCVE-2026-7439
CVSS Score4.4 / 10
SeverityMEDIUM
WeaknessCWE-346
CISA KEVNo
EPSS (30d)0.01%
PublishedApr 29, 2026
Related CVEs (CWE-346)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-7439 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.