What is CVE-2026-59274?

CVE-2026-59274 is a medium-severity vulnerability in Spring Integration, classified under Improper Handling of Highly Compressed Data (Data Amplification). CVSS score: 6.5/10. Published 2026-08-27.

How severe is CVE-2026-59274?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Spring Integration

CVE-2026-59274

The UnZipTransformer does not limit decompressed entry size or entry count when processing archives. Consequently, an attacker can send a zip archive that can exhaust JVM heap memory, causing a denial-of-service outage. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12

EPSS: 0.002 (14.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Spring Integration — versions 7.1.0

Weakness classification (CWE)

CWE-409 — Improper Handling of Highly Compressed Data (Data Amplification)

References

security@vmware.com

Frequently asked questions

What is CVE-2026-59274?: CVE-2026-59274 is a medium-severity vulnerability in Spring Integration, classified under Improper Handling of Highly Compressed Data (Data Amplification). CVSS score: 6.5/10. Published 2026-08-27.
How severe is CVE-2026-59274?: Medium severity. CVSS v3 base score is 6.5 out of 10.