CVE-2026-59307Network attack vector

Code execution via stale permit-all row mapper

Published Aug 27, 2026 · Updated Aug 27, 2026

Unsafe deserialization in affected Spring Integration releases allows attackers to execute code via crafted JDBC message-store content. In a Spring-managed JdbcMessageStore, setBeanClassLoader replaces the deserializing converter, but the row mapper keeps its original permit-all converter and never consults patterns set by addAllowedPatterns. Exploitation requires write access to INT_MESSAGE.MESSAGE_CONTENT and affects only deployments that configured the allow-list.

CVSS severity8.0
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unsafe deserialization in affected Spring Integration releases allows attackers to execute code via crafted JDBC message-store content. In a Spring-managed JdbcMessageStore, setBeanClassLoader replaces the deserializing converter, but the row mapper keeps its original permit-all converter and never consults patterns set by addAllowedPatterns. Exploitation requires write access to INT_MESSAGE.MESSAGE_CONTENT and affects only deployments that configured the allow-list.

The record

CVE
CVE-2026-59307
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Spring
Product
Spring Integration
Classifications
Unavailable
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.0 <=6.4.12
  2. Affected versionversion=6.5.0 <=6.5.10
  3. Affected versionversion=7.0.0 <=7.0.5
  4. Affected versionversion=7.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Spring · Spring Integrationversion=6.4.0 <=6.4.12; version=6.5.0 <=6.5.10; version=7.0.0 <=7.0.5; version=7.1.0

Published CVSS scores

8.0SpringCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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