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Back to active CVEs
Medium · CVSS 5.4CVE-2026-47859

Unbounded memory allocation in RFC6587SyslogDeserializer (octet-counted framing) — remote DoSCVE-2026-47859

Answer in brief

CVE-2026-47859 records a Medium severity (CVSS 5.4) vulnerability in Unbounded memory allocation in RFC6587SyslogDeserializer (octet-counted framing) — remote DoS. The current sources do not mark it as known exploited. The current feed maps Spring/Spring Integration (generic), Spring/Spring Integration (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 26, 2026Updated Sep 4, 2026Source checked Oct 11, 2026First seen by HOL Aug 27, 2026Material review Sep 4, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.4
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Spring/Spring Integration (generic), Spring/Spring Integration (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:vmware:spring_integration:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Spring/Spring Integrationgeneric7.1.0 || 7.0.0 || 6.5.0 || 6.4.0 || 0Not reported
Spring/Spring Integrationgeneric7.1.0 || >=7.0.0 <=7.0.5 || >=6.5.0 <=6.5.10 || >=6.4.0 <=6.4.12 || >=0 <=5.5.21Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Spring/Spring Integration, Spring/Spring Integration.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Aug 26, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 27, 2026

Sources and claim methodology

  • Source referencespring.io
Upstream source description

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

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-770
Source
CVE List V5
Source checked
Oct 11, 2026
References
1 linked source
Open source record