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Spring Cloud Stream CVE-2026-59304

| EUVDEUVD-2026-67190 LOW
Access of Resource Using Incompatible Type (Type Confusion) (CWE-843)
2026-08-27 vmware GHSA-jjqx-2h5c-j956
3.1
CVSS 3.1 · Vendor: vmware

Severity by source

Vendor (vmware) PRIMARY
3.1 LOW
AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
vuln.today AI
3.1 LOW

Consistent with vendor-assigned vector; PR:H and AC:H reflect high-privilege Avro pipeline access and specific sequencing requirements; no availability impact applies.

3.1 AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
4.0 AV:N/AC:H/AT:P/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (vmware).

CVSS VectorVendor: vmware

CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

1
Analysis Generated
Aug 27, 2026 - 20:53 vuln.today

DescriptionCVE.org

Improper caching of the original content type in Spring Cloud Stream Avro. Spring Cloud Stream 5.0.0 - 5.0.2 Spring Cloud Stream 4.3.0 - 4.3.3 Spring Cloud Stream 4.2.0 - 4.2.6

AnalysisAI

Improper content-type caching in the Avro component of Spring Cloud Stream can produce incorrect content-type metadata on processed messages, creating a low-severity information-disclosure and data-integrity risk. Affected versions span the 4.2.x, 4.3.x, and 5.0.x release trains. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
technique details hidden
Persist
technique details hidden
Impact
technique details hidden

Vulnerability AssessmentAI

Exploitation Exploitation requires all of the following conditions simultaneously: (1) the target application uses Spring Cloud Stream with the Avro binder component enabled - deployments using JSON, Protobuf, or other serializers are not affected; (2) the attacker must hold high-privilege access (PR:H per CVSS), meaning they must be authenticated with elevated rights over the messaging infrastructure or application configuration; (3) high attack complexity (AC:H) implies specific timing or sequencing conditions must be met; (4) user interaction (UI:R) is required, meaning a legitimate privileged user must take some action to trigger the flawed code path. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The overall risk is low. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is to upgrade Spring Cloud Stream to a version outside the affected ranges for each supported train. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-59304 vulnerability details – vuln.today

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