RHSA-2026:83593
Vulnerability from csaf_redhat - Published: 2026-10-15 13:53 - Updated: 2026-10-27 04:28Summary
Red Hat Security Advisory: RHTAS 1.0.3 - GA Release Of the Policy Controller Operator
Severity
Important
Notes
Topic: The GA release of the RHTAS Policy Controller Operator.
For more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4
Details: The RHTAS Policy Controller Operator can be used with OpenShift Container Platform 4.16, 4.17, 4.18, 4.19, 4.20, 4.21, 4.22, 5.0
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in OpenTelemetry-Go. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by sending oversized or invalid baggage headers. The `Parse` function, in affected versions, failed to reject raw-length inputs, leading to excessive processing and error logging when handling these large inputs.
7.5 (High)
Affected products
Fixed
1 product
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:fd1558e0379588106adc7928356a3c443ad2d54b78536378462694920f549667_amd64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in golang.org/x/crypto/ssh. The component failed to properly enforce source-address restrictions for several authentication methods, including password and keyboard-interactive callbacks. In applications that misuse the ServerConfig.PublicKeyCallback callback to make security relevant authorization decisions, an attacker with a valid key could bypass network-based access controls to gain additional privileges.
6.8 (Medium)
Affected products
Fixed
1 product, the same list as for
CVE-2026-41178
Threats
Impact
Important
A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.
7.5 (High)
Affected products
Fixed
1 product, the same list as for
CVE-2026-41178
Threats
Impact
Important
References
34 references
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"text": "This vulnerability severity is Important due to the requirement that an attacker already have a valid private key. A flaw in golang.org/x/crypto/ssh allows remote attackers to bypass source-address restrictions for certain authentication methods. This would allow an attacker to use a valid key for gaining additional privileges outside of the bounds of the network-based access controls.",
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{
"category": "external",
"summary": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj",
"url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-2v4p-qf9q-27wj"
}
],
"release_date": "2026-09-14T16:11:41.401000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-15T13:53:55+00:00",
"details": "The RHTAS Policy Controller Operator is Helm-based operator for deploying and managing instances of the Sigstore Policy Controller on OpenShift. It is a self-managed on-premise deployment of the Policy Controller Helm Charts available at https://github.com/sigstore/helm-charts/tree/main/charts/policy-controller\n\nPlatform Engineers, Software Developers and Security Professionals may use the RHTAS Policy Controller Operator to enforce policies on OCP clusters by using supply-chain metadata.\n\nFor details on using the RHTAS Policy Controller Operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:fd1558e0379588106adc7928356a3c443ad2d54b78536378462694920f549667_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:83593"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/policy-controller-rhel9@sha256:fd1558e0379588106adc7928356a3c443ad2d54b78536378462694920f549667_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.