Detections
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SCA: security update for OpenTelemetry.Exporter.OpenTelemetryProtocol (GHSA-mr8r-92fq-pj8p)

medium Tenable Self-Hosted Container Security Plugin ID 440791

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting
 telemetry over gRPC using the OpenTelemetry Protocol (OTLP), the exporter may parse a server-provided
 grpc-status-details-bin trailer during retry handling. Prior to the fix, a malformed trailer could encode
 an extremely large length-delimited protobuf field which was used directly for allocation, allowing
 excessive memory allocation and potential denial of service (DoS). This vulnerability is fixed in 1.15.2.
 (CVE-2026-40891)

Solution

Update the OpenTelemetry.Exporter.OpenTelemetryProtocol library and its related packages to version 1.15.3 or later.

See Also

https://github.com/advisories/GHSA-mr8r-92fq-pj8p

Plugin Details

Severity: Medium

ID: 440791

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 4/24/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:A/AC:H/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-40891

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/23/2026

Vulnerability Publication Date: 4/23/2026

Reference Information

CVE: CVE-2026-40891

cwe: CWE-789