Spring Integration up to 6.4.12/6.5.10/7.0.5/7.1.0 UnZipTransformer data amplification

Summaryinfo

A vulnerability described as problematic has been identified in Spring Integration up to 6.4.12/6.5.10/7.0.5/7.1.0. This impacts an unknown function of the component UnZipTransformer. Such manipulation leads to data amplification. This vulnerability is documented as CVE-2026-59274. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Spring Integration up to 6.4.12/6.5.10/7.0.5/7.1.0 and classified as problematic. Affected by this issue is an unknown code block of the component UnZipTransformer. The manipulation with an unknown input leads to a data amplification vulnerability. Using CWE to declare the problem leads to CWE-409. The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output. Impacted is availability. CVE summarizes:

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

The advisory is available at spring.io. This vulnerability is handled as CVE-2026-59274 since 07/04/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Spring

Name

• Integration

Version

• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6
• 6.4.7
• 6.4.8
• 6.4.9
• 6.4.10
• 6.4.11
• 6.4.12
• 6.5.0
• 6.5.1
• 6.5.2
• 6.5.3
• 6.5.4
• 6.5.5
• 6.5.6
• 6.5.7
• 6.5.8
• 6.5.9
• 6.5.10
• 7.0
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.1.0

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