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CVE-2026-45292— opentelemetry-java: Unbounded Memory Allocation in W3C Baggage Propagation

Quick assessment

Affected
open-telemetry opentelemetry-java
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenTelemetry是OpenTelemetry开源的一个供应商中立的开源可观测性框架。 OpenTelemetry 1.62.0之前版本存在安全漏洞，该漏洞源于解析过大的baggage导致无限制内存分配和CPU消耗，并可能传播到下游服务。

CVSS 5.3 · Medium EPSS 0.85% · P57

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 3

VendorProduct Version RangeStatus
io.opentelemetry opentelemetry-api 1.62.0 affected
io.opentelemetry opentelemetry-extension-trace-propagators 1.62.0 affected
open-telemetry opentelemetry-java < 1.62.0 affected
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I. Basic Information for CVE-2026-45292

Vulnerability Information
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Vulnerability Title
opentelemetry-java: Unbounded Memory Allocation in W3C Baggage Propagation
Source: CVE Program / CVE List V5
Vulnerability Description
opentelemetry-java is the Java implementation of the OpenTelemetry API for recording telemetry, and SDK for managing telemetry recorded by the API. Prior to 1.62.0, a vulnerability affects the baggage propagation implementation in opentelemetry-api and opentelemetry-extension-trace-propagators. Parsing oversized baggage causes unbounded memory allocation and CPU consumption. Because baggage is automatically re-injected into every outgoing request, the effect can fan out to downstream services that never received the original malicious request. This vulnerability is fixed in 1.62.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
OpenTelemetry 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenTelemetry是OpenTelemetry开源的一个供应商中立的开源可观测性框架。 OpenTelemetry 1.62.0之前版本存在安全漏洞，该漏洞源于解析过大的baggage导致无限制内存分配和CPU消耗，并可能传播到下游服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
open-telemetry opentelemetry-java < 1.62.0 -
io.opentelemetry opentelemetry-api 1.62.0 -
io.opentelemetry opentelemetry-extension-trace-propagators 1.62.0 -

II. Public POCs for CVE-2026-45292

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III. Intelligence Information for CVE-2026-45292

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Patches & Fixes for CVE-2026-45292 (1)

Vendor Advisories for CVE-2026-45292 (1)

Vendor Pages for CVE-2026-45292 (1)

IV. Related Vulnerabilities

Same vendor: open-telemetry
Same weakness: CWE-770

V. Comments for CVE-2026-45292

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