Is CVE-2026-29181 actively exploited?

CVE-2026-29181 has no public evidence of in-the-wild exploitation as of 2026-04-14.

What is the CVSS score for CVE-2026-29181?

CVE-2026-29181 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2026-29181?

Patch guidance is available from opentelemetry security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-29181.

Which products are affected by CVE-2026-29181?

1 product: opentelemetry opentelemetry.

Fix CVE-2026-29181 - HIGH opentelemetry opentelemetry

Description

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-770

Metadata

Primary Vendor: OPENTELEMETRY
Published: 4/7/2026
Last Modified: 4/14/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-29181

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary