How severe is CVE-2026-59306?

CVE-2026-59306 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-59306 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-59306?

CVE-2026-59306 affects Vmware Spring Cloud Stream. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-59306?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-59306 published?

CVE-2026-59306 was published on 2026-08-27 and last updated on 2026-09-04.

CVE-2026-59306

CVE-2026-59306 is a low-severity vulnerability in Vmware Spring Cloud Stream with a CVSS 3.x base score of 3.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Vmware Spring Cloud Stream
Published: 2026-08-27
Last modified: 2026-09-04

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

Frequently asked questions

What is CVE-2026-59306?: 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
How severe is CVE-2026-59306?: CVE-2026-59306 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-59306 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-59306?: CVE-2026-59306 affects Vmware Spring Cloud Stream. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-59306?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-59306 published?: CVE-2026-59306 was published on 2026-08-27 and last updated on 2026-09-04.

References

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

Affected products (1)

cpe:2.3:a:vmware:spring_cloud_stream:*:*:*:*:*:*:*:*

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