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Spring Integration CVE-2026-47859

| EUVDEUVD-2026-66825 MEDIUM
Allocation of Resources Without Limits or Throttling (CWE-770)
2026-08-26 vmware GHSA-wh6x-77fw-hcqh
Java Spring Integration Denial Of Service
5.4
CVSS 3.1 · Vendor: vmware
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Severity by source

Vendor (vmware) PRIMARY
5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
vuln.today AI
6.3 MEDIUM

Unbounded allocation from attacker-controlled length value warrants A:L over vendor A:N; all other metrics align with network-reachable, low-privilege syslog sender access.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (vmware).

CVSS VectorVendor: vmware

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

1
Analysis Generated
Aug 27, 2026 - 00:46 vuln.today

DescriptionCVE.org

RFC6587SyslogDeserializer, used by the Spring Integration syslog TCP inbound adapter to decode RFC 6587 / RFC 5424 frames, trusts the sender-supplied octet count of an octet-counted frame and allocates a byte array of exactly that size with no upper bound. 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 Spring Integration 5.5.21 and earlier

AnalysisAI

Uncontrolled memory allocation in Spring Integration's RFC6587SyslogDeserializer allows any network-reachable, low-privileged syslog sender to supply an arbitrarily large octet count, causing the TCP inbound adapter to allocate an unbounded byte array and potentially read across RFC 6587 message frame boundaries. Affected release lines span 5.5.x through 7.1.0. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
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Vulnerability AssessmentAI

Exploitation Exploitation requires that the Spring Integration application deploys the syslog TCP inbound adapter and that it is configured to accept RFC 6587 octet-counting framed messages (the RFC6587SyslogDeserializer code path). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.4 Medium (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N) reflects a network-reachable, low-complexity attack requiring low privileges. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation The primary remediation is upgrading to a patched Spring Integration release; exact fixed version numbers are not confirmed in the available advisory data and must be verified directly at https://spring.io/security/cve-2026-47859 before applying. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-47859 vulnerability details – vuln.today
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