CVE-2026-59274

Unbounded decompression in UnZipTransformer enables zip-bomb DoS

Medium6.5EPSS 0.42%

Published: 27 Aug 2026
Updated: 27 Aug 2026
Reserved: 4 Jul 2026
Assigned by: vmware

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

Timeline

2026
4 Jul 2026
4 Jul 2026
ID reserved
By vmware
27 Aug 202654 days later
27 Aug 2026· 54 days later
Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-59274, by who scored it
Scored by	CVSS	Score	Vector
vmwareCNA (assigner)	3.1	Medium6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Analyzed	3.1	Medium6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS (exploitation in 30 days): 0.42% · top 63% of all CVEs (7 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.

Weakness

CWE-409 Improper Handling of Highly Compressed Data (Data Amplification, Decompression Bomb)
CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) (opens in a new tab)All about CWE-409 and its CVEs

Affected products

Spring · Spring Integration
- affected 7.1.0
- affected 7.0.0 – ≤ 7.0.5
- affected 6.5.0 – ≤ 6.5.10
- affected 6.4.0 – ≤ 6.4.12

References (1)

https://spring.io/security/cve-2026-59274 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-59274](https://trackcve.app/badge/CVE-2026-59274.svg)](https://trackcve.app/cve/CVE-2026-59274)

Record last updated 27 Aug 2026, 14:13 UTC.