Issued:
2026-07-01
Updated:
2026-07-01

RHSA-2026:34359 - Important: opentelemetry-collector security update

Synopsis

Important: opentelemetry-collector security update

Type/Severity

Security Advisory Important

Topic

An update for opentelemetry-collector is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Collector with the supported components for a Red Hat build of OpenTelemetry

Security Fix(es):

  • github.com/prometheus/prometheus: Prometheus: Denial of Service via uncontrolled memory allocation in remote read endpoint (CVE-2026-42154)

  • github.com/prometheus/prometheus: Prometheus: Information disclosure of Azure OAuth client secret via config API (CVE-2026-42151)

  • net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)

  • golang.org/x/net/idna: golang: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)

  • golang.org/x/net/html: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting (CVE-2026-25681)

  • crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_649x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.8x86_64
Red Hat Enterprise Linux for Power, little endian9ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support9.8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle9.8ppc64le
Red Hat Enterprise Linux for IBM z Systems9s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support9.8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle9.8s390x
Red Hat Enterprise Linux for IBM z Systems - 4 years of updates9.8s390x
Red Hat Enterprise Linux for ARM 649aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support9.8aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle9.8aarch64
Red Hat Enterprise Linux for ARM 64 - 4 years of updates9.8aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions9.8ppc64le

Updated Packages

  • opentelemetry-collector-0.152.1-1.el9_8.src.rpm
  • opentelemetry-collector-0.152.1-1.el9_8.x86_64.rpm
  • opentelemetry-collector-0.152.1-1.el9_8.s390x.rpm
  • opentelemetry-collector-0.152.1-1.el9_8.aarch64.rpm
  • opentelemetry-collector-0.152.1-1.el9_8.ppc64le.rpm

Fixes

CVEs

References

Additional information