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2 vulnerabilities found for opentelemetry.exporter.opentelemetryprotocol by opentelemetry

CVE-2026-42191 (GCVE-0-2026-42191)

Vulnerability from nvd – Published: 2026-05-12 19:12 – Updated: 2026-05-13 14:16
VLAI
Title
OpenTelemetry.Exporter.OpenTelemetryProtocol: Disk retry default temp path enables local blob injection for OTLP Exporter
Summary
OpenTelemetry.Exporter.OpenTelemetryProtocol is the OTLP (OpenTelemetry Protocol) exporter implementation. From 1.8.0 to 1.15.2, the OTLP disk retry feature in OpenTelemetry.Exporter.OpenTelemetryProtocol silently fell back to Path.GetTempPath() when OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY=disk was set but OTEL_DOTNET_EXPERIMENTAL_OTLP_DISK_RETRY_DIRECTORY_PATH was not configured. The exporter stored and loaded *.blob files under fixed, signal-named subdirectories (traces, metrics, logs) beneath that shared temporary root path. On multi-user systems where the temporary directory is accessible to other local accounts, this allows an attacker to write crafted *.blob files, read *.blob files written by the application between export failures, or deposit numerous or oversized blob files, degrading retry-loop performance or consuming disk space. This vulnerability is fixed in 1.15.3.
Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-379 - Creation of Temporary File in Directory with Insecure Permissions
Assigner
References
Impacted products
Vendor Product Version
open-telemetry opentelemetry-dotnet Affected: >= 1.8.0, < 1.15.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42191 (GCVE-0-2026-42191)

Vulnerability from cvelistv5 – Published: 2026-05-12 19:12 – Updated: 2026-05-13 14:16
VLAI
Title
OpenTelemetry.Exporter.OpenTelemetryProtocol: Disk retry default temp path enables local blob injection for OTLP Exporter
Summary
OpenTelemetry.Exporter.OpenTelemetryProtocol is the OTLP (OpenTelemetry Protocol) exporter implementation. From 1.8.0 to 1.15.2, the OTLP disk retry feature in OpenTelemetry.Exporter.OpenTelemetryProtocol silently fell back to Path.GetTempPath() when OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY=disk was set but OTEL_DOTNET_EXPERIMENTAL_OTLP_DISK_RETRY_DIRECTORY_PATH was not configured. The exporter stored and loaded *.blob files under fixed, signal-named subdirectories (traces, metrics, logs) beneath that shared temporary root path. On multi-user systems where the temporary directory is accessible to other local accounts, this allows an attacker to write crafted *.blob files, read *.blob files written by the application between export failures, or deposit numerous or oversized blob files, degrading retry-loop performance or consuming disk space. This vulnerability is fixed in 1.15.3.
Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE
  • CWE-379 - Creation of Temporary File in Directory with Insecure Permissions
Assigner
References
Impacted products
Vendor Product Version
open-telemetry opentelemetry-dotnet Affected: >= 1.8.0, < 1.15.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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