Summary
Collector with the supported components for a AlmaLinux 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.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | opentelemetry-collector | 0.144.0-2.el9_8 |
Vulnerabilities 8
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Critical 9.1CVE-2026-33186 Public exploit
gRPC-Go has an authorization bypass via missing leading slash in :path
gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests …
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High 7.5
Incorrect parsing of IPv6 host literals in net/url
url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.
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High 7.5
Unexpected work during chain building in crypto/x509
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 an…
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High 7.5
Inefficient policy validation in crypto/x509
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chain…
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High 7.5
Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
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High 7.5
Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509
When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issu…
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High 7.5
Go JOSE affect by a panic in JWE decryption
Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.4 and 3.0.5, decrypting a JS…
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Medium 6.4
TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix
On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the AT_SYMLINK_N…
References
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report
https://access.redhat.com/security/cve/CVE-2026-25679
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report
https://access.redhat.com/security/cve/CVE-2026-32280
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report
https://access.redhat.com/security/cve/CVE-2026-32281
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report
https://access.redhat.com/security/cve/CVE-2026-32282
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report
https://access.redhat.com/security/cve/CVE-2026-32283
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report
https://access.redhat.com/security/cve/CVE-2026-33186
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report
https://access.redhat.com/security/cve/CVE-2026-33810
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report
https://access.redhat.com/security/cve/CVE-2026-34986
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report
https://bugzilla.redhat.com/2445356
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report
https://bugzilla.redhat.com/2449833
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report
https://bugzilla.redhat.com/2455470
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report
https://bugzilla.redhat.com/2456333
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report
https://bugzilla.redhat.com/2456335
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report
https://bugzilla.redhat.com/2456336
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report
https://bugzilla.redhat.com/2456338
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report
https://bugzilla.redhat.com/2456339
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advisory
https://errata.almalinux.org/9/ALSA-2026-19353.html