CVE-2026-59274

Unbounded decompression in UnZipTransformer enables zip-bomb DoS

State: Published
Severity: 6.5 Medium
Published: Aug 27, 2026
Updated: Aug 27, 2026
Reserved: Jul 4, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	vmware

Weaknesses

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

Affected Products

Product	Versions
Spring IntegrationSpring	7.1.0Affected 7.0.0 through 7.0.5Affected 6.5.0 through 6.5.10Affected 6.4.0 through 6.4.12Affected

References

https://spring.io/security/cve-2026-59274

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