CVE-2026-42191 - CERT CVE
ID CVE-2026-42191
Sažetak 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.
Reference
CVSS
Base: 6.5
Impact: 5.5
Exploitability:1.0
Pristup
VektorSloženostAutentikacija
LOCAL HIGH LOW
Impact
PovjerljivostCjelovitostDostupnost
HIGH HIGH LOW
CVSS vektor CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Zadnje važnije ažuriranje 13-05-2026 - 18:16
Objavljeno 12-05-2026 - 20:16