Vulnerability in io.opentelemetry.javaagent:opentelemetry-javaagent (CVE-2026-54712)
Summary
Vulnerability in io.opentelemetry.javaagent:opentelemetry-javaagent (CVE-2026-54712). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 2.27.0 or later.
Original description
The description as published by the source.
OpenTelemetry Java Instrumentation provides OpenTelemetry auto-instrumentation and instrumentation libraries for Java. In versions prior to 2.27.0, the RMI context propagation payload reader limits the number of context entries but does not limit the aggregate size of the strings read from the stream. An attacker who can reach an RMI endpoint on an instrumented JVM can send an oversized context propagation payload. This can cause excessive memory allocation while the JVM reads the payload, potentially leading to denial of service. The issue affects only deployments where RMI instrumentation is enabled and an RMI endpoint is network-reachable. This issue has been fixed in version 2.27.0.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-54712 has been found in io.opentelemetry.javaagent:opentelemetry-javaagent.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: upgrade io.opentelemetry.javaagent:opentelemetry-javaagent to 2.27.0 or later.
If unsure, ask your IT team or search "io.opentelemetry.javaagent:opentelemetry-javaagent CVE-2026-54712" on the vendor's site.
CVE-2026-54712 (io.opentelemetry.javaagent:opentelemetry-javaagent) — CWE-400 / CVSS v3 5.3
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 2.27.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-400) exists in io.opentelemetry.javaagent:opentelemetry-javaagent.
Check the vendor advisory for the affected versions of io.opentelemetry.javaagent:opentelemetry-javaagent.
Severity: Medium (CVSS 5.3/10). Risk of unauthorized operations or information disclosure.
Update to 2.27.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで io.opentelemetry.javaagent:opentelemetry-javaagent を使っているサービスとバージョンを洗い出す。
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2Apply patch patch
Upgrade io.opentelemetry.javaagent:opentelemetry-javaagent to 2.27.0ステージング環境で 2.27.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory github.com
- package github.com
- web github.com
- web github.com
- web github.com
- web github.com