Red Hat Product Errata RHSA-2026:19721 - Security Advisory Issued: 2026-05-20 Updated: 2026-05-20 RHSA-2026:19721 - Security Advisory Overview Updated Packages Synopsis Important: opentelemetry-collector security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for opentelemetry-collector is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. 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): net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679) google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186) github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object (CVE-2026-34986) crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281) crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810) golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282) crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280) 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 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 x86_64 Red Hat Enterprise Linux Server - AUS 9.4 x86_64 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 s390x Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 ppc64le Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.4 s390x Fixes BZ - 2445356 - CVE-2026-25679 net/url: Incorrect parsing of IPv6 host literals in net/url BZ - 2449833 - CVE-2026-33186 google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation BZ - 2455470 - CVE-2026-34986 github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object BZ - 2456333 - CVE-2026-32281 crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation BZ - 2456335 - CVE-2026-33810 crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application BZ - 2456336 - CVE-2026-32282 golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root BZ - 2456338 - CVE-2026-32283 crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages BZ - 2456339 - CVE-2026-32280 crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building CVEs CVE-2026-25679 CVE-2026-32280 CVE-2026-32281 CVE-2026-32282 CVE-2026-32283 CVE-2026-33186 CVE-2026-33810 CVE-2026-34986 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 x86_64 opentelemetry-collector-0.144.0-2.el9_4.x86_64.rpm SHA-256: 01eca24f53e65e086ec8cdd0d71f24d4de3df3979c95839727082982a0e224b7 Red Hat Enterprise Linux Server - AUS 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 x86_64 opentelemetry-collector-0.144.0-2.el9_4.x86_64.rpm SHA-256: 01eca24f53e65e086ec8cdd0d71f24d4de3df3979c95839727082982a0e224b7 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 s390x opentelemetry-collector-0.144.0-2.el9_4.s390x.rpm SHA-256: 779d038ad857802df3c46d86835866f42cc73ed29045375eb9a3257be47df0bf Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 ppc64le opentelemetry-collector-0.144.0-2.el9_4.ppc64le.rpm SHA-256: fd294ed1cf439d9fe790d5dc346402449071ebfcb2fd29895e64e51502982afa Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 aarch64 opentelemetry-collector-0.144.0-2.el9_4.aarch64.rpm SHA-256: 2c96e5e16307bf7cd1d4939a19e841db21b1bc260a68156c9a91f9f4bcb65e4b Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 ppc64le opentelemetry-collector-0.144.0-2.el9_4.ppc64le.rpm SHA-256: fd294ed1cf439d9fe790d5dc346402449071ebfcb2fd29895e64e51502982afa Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 x86_64 opentelemetry-collector-0.144.0-2.el9_4.x86_64.rpm SHA-256: 01eca24f53e65e086ec8cdd0d71f24d4de3df3979c95839727082982a0e224b7 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 aarch64 opentelemetry-collector-0.144.0-2.el9_4.aarch64.rpm SHA-256: 2c96e5e16307bf7cd1d4939a19e841db21b1bc260a68156c9a91f9f4bcb65e4b Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 s390x opentelemetry-collector-0.144.0-2.el9_4.s390x.rpm SHA-256: 779d038ad857802df3c46d86835866f42cc73ed29045375eb9a3257be47df0bf Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 x86_64 opentelemetry-collector-0.144.0-2.el9_4.x86_64.rpm SHA-256: 01eca24f53e65e086ec8cdd0d71f24d4de3df3979c95839727082982a0e224b7 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 aarch64 opentelemetry-collector-0.144.0-2.el9_4.aarch64.rpm SHA-256: 2c96e5e16307bf7cd1d4939a19e841db21b1bc260a68156c9a91f9f4bcb65e4b Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 ppc64le opentelemetry-collector-0.144.0-2.el9_4.ppc64le.rpm SHA-256: fd294ed1cf439d9fe790d5dc346402449071ebfcb2fd29895e64e51502982afa Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.4 SRPM opentelemetry-collector-0.144.0-2.el9_4.src.rpm SHA-256: 931131af7f02e41be01b09180c6a2dc0b0fc015ef09865dc548ed82ec1dbfa01 s390x opentelemetry-collector-0.144.0-2.el9_4.s390x.rpm SHA-256: 779d038ad857802df3c46d86835866f42cc73ed29045375eb9a3257be47df0bf The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .