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Back to active CVEs
Medium · CVSS 4.3CVE-2026-115289

Use of Multiple Resources with Duplicate Identifier in APM Server Leading to Information DisclosureCVE-2026-115289

Answer in brief

CVE-2026-115289 records a Medium severity (CVSS 4.3) vulnerability in Use of Multiple Resources with Duplicate Identifier in APM Server Leading to Information Disclosure. The current sources do not mark it as known exploited. The current feed maps Elastic/APM Server (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 Nov 3, 2026Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Nov 3, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 4.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 4.3. 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 Elastic/APM Server (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Elastic/APM Servergeneric>=8.0.0 <=8.19.23 || >=9.0.0 <=9.4.8 || >=9.5.0 <=9.5.5Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Elastic/APM Server.
  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

    Nov 3, 2026

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

  2. Source modified

    Nov 3, 2026

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

  3. First seen by HOL

    Nov 3, 2026

Sources and claim methodology

  • Source referencediscuss.elastic.co
Upstream source description

Use of Multiple Resources with Duplicate Identifier (CWE-694) in APM Server can lead to information disclosure via a specially crafted agent configuration request. An authenticated APM agent could receive the central agent configuration that belongs to a different service until the cached configuration expires. A service could also run with central configuration settings, such as sampling settings, that were meant for a different service.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Allocation of Resources Without Limits or Throttling in APM Server Leading to Denial of ServiceSame elastic/apm server package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-694
Source
CVE List V5
Source checked
Nov 3, 2026
References
1 linked source
Open source record