RHSA-2026:42241
Vulnerability from csaf_redhat - Published: 2026-07-20 20:13 - Updated: 2026-08-24 23:05Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
helm3:
* helm3-3.21.3-0.1.2.hum1 (aarch64, x86_64)
* helm3-3.21.3-0.1.2.hum1.src (src)
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 oras-go. The file content store, intended to confine writes to a specified working directory, does not properly account for symbolic link (symlink) traversal. A remote attacker, by providing a specially crafted blob title, could exploit this vulnerability to create files outside the intended working directory. This filesystem boundary bypass allows for arbitrary file creation, potentially leading to unauthorized data modification or system compromise depending on the runtime environment.
5.3 (Medium)
Affected products
Threats
Impact
Moderate
A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.
7.5 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:helm3-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:helm3-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:helm3-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in Helm. A remote attacker can exploit a denial of service vulnerability by including zero-length byte slices, such as empty files, within Helm chart files. This can trigger an index out of range panic in the Files.Lines template helper, leading to deterministic render failures during template, installation, upgrade, linting, and SDK Engine.Render operations.
4.3 (Medium)
Affected products
Threats
Impact
Moderate
References
27 references
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"name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
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"title": "Vulnerability description"
},
{
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"text": "oras-go: oras-go: File store write outside working directory via symlink traversal",
"title": "Vulnerability summary"
},
{
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"text": "A flaw was found in golang.org/x/text. The norm.Iter component can enter an infinite loop when processing input that contains invalid UTF-8 (Unicode Transformation Format - 8-bit) bytes. A remote attacker could exploit this vulnerability by providing specially crafted input, leading to a Denial of Service (DoS) condition where the affected application becomes unresponsive.",
"title": "Vulnerability description"
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{
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"text": "golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input",
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{
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"text": "Important: This flaw in the `golang.org/x/text` library can lead to a denial of service. An attacker could provide specially crafted invalid UTF-8 input to an application using the affected `norm.Iter` functionality, causing it to enter an infinite loop and become unresponsive.",
"title": "Statement"
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"title": "CVSS score applicability"
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],
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},
{
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},
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"text": "A flaw was found in Helm. A remote attacker can exploit a denial of service vulnerability by including zero-length byte slices, such as empty files, within Helm chart files. This can trigger an index out of range panic in the Files.Lines template helper, leading to deterministic render failures during template, installation, upgrade, linting, and SDK Engine.Render operations.",
"title": "Vulnerability description"
},
{
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},
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}
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"summary": "https://github.com/helm/helm/commit/ba6c9a29efa7bf9198dad6a5ec12b4fb30c96017",
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"url": "https://github.com/helm/helm/pull/32290"
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"url": "https://www.vulncheck.com/advisories/chat2db-insecure-direct-object-reference-via-get-api-connection-datasource"
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],
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"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:42241"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
"version": "3.1"
},
"products": [
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]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "Helm: Helm: Denial of Service via malformed chart files"
}
]
}
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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.
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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.
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.
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