CVE-2026-59306

Potential for deserialization of untrusted types in Spring Cloud Stream

LOW

3.8

CVSS Score

Published: August 27, 2026 at 06:04 PM UTC

Updated: September 4, 2026 at 07:36 PM UTC

2 products affected across 2 vendorsSpring Cloud StreamSpring Cloud Stream

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Severity

LOW3.8

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

Potential for deserialization of untrusted types in Spring Cloud Stream. 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

Affected

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

Spring Cloud Stream · VMware

95%

4.2.0 ≤ v < 4.2.74.3.0 ≤ v < 4.3.45.0.0 ≤ v < 5.0.3

Affected range stops below 4.2.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 4.3.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.0.3, so it looks safe — our inference, not a vendor statement

Spring Cloud Stream · Spring

60%

4.2.0 ≤ v ≤ 4.2.64.3.0 ≤ v ≤ 4.3.35.0.0 ≤ v ≤ 5.0.24.2.0 4.3.0 5.0.0

Remediation

No guide yet

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

Patch and advisory references

https://spring.io/security/cve-2026-59306

References (1)

PatchVendor Advisory

Source: cverecord

https://spring.io/security/cve-2026-59306

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

3.8LOW[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: HIGH
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: LOW
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-502

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