RHSA-2026:82637
Vulnerability from csaf_redhat - Published: 2026-10-14 00:21 - Updated: 2026-10-16 14:52Summary
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:
hugo:
* hugo-0.168.0-0.1.hum1 (aarch64, s390x, x86_64)
* hugo-0.168.0-0.1.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 kin-openapi. An unauthenticated remote attacker can cause a Denial of Service (DoS) by sending requests with unsupported or non-canonical HTTP methods to an existing static path. Because the application encounters an unhandled panic before authentication is evaluated, these requests terminate active connections and can cause excessive log storage consumption.
5.3 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in kin-openapi. This vulnerability allows an attacker to cause a Denial of Service (DoS) by triggering an application crash during response validation. When an OpenAPI specification declares a response header using content rather than a schema, the validation logic attempts to dereference an uninitialized pointer, causing the application to panic and terminate.
7.5 (High)
Affected products
Fixed
4 products, the same list as for
CVE-2026-100347
Threats
Impact
Important
A flaw was found in kin-openapi. An unauthenticated remote attacker can trigger a Denial of Service (DoS) by sending requests containing a large number of query parameters to an affected endpoint. Due to redundant regular expression compilation within the parameter decoding loop, processing these requests leads to excessive CPU and memory consumption, potentially degrading application responsiveness or exhausting server resources.
5.3 (Medium)
Affected products
Fixed
4 products, the same list as for
CVE-2026-100347
Threats
Impact
Moderate
A flaw was found in kin-openapi. An unauthenticated remote attacker can bypass authentication checks on protected routes by sending requests containing encoded path separators. This issue occurs because the request validation handler inspects the decoded URL path, while certain downstream routers dispatch requests using the raw encoded path. As a result, a request can be mistakenly treated as public and forwarded to a protected handler without required authentication.
7.4 (High)
Affected products
Fixed
4 products, the same list as for
CVE-2026-100347
Threats
Impact
Important
A flaw was found in kin-openapi. A remote, unauthenticated attacker can exploit this vulnerability by submitting a specially crafted YAML request containing non-finite numeric values, such as Not-a-Number or infinity, to an endpoint with numeric constraints. Because the validation process fails to restrict these unexpected values, the application triggers a runtime crash. This allows an attacker to cause a Denial of Service (DoS) on the affected service.
7.5 (High)
Affected products
Fixed
4 products, the same list as for
CVE-2026-100347
Threats
Impact
Important
References
47 references
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"name": "Allocation of Resources Without Limits or Throttling"
},
"discovery_date": "2026-10-15T15:52:40.679996+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2553584"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in kin-openapi. An unauthenticated remote attacker can trigger a Denial of Service (DoS) by sending requests containing a large number of query parameters to an affected endpoint. Due to redundant regular expression compilation within the parameter decoding loop, processing these requests leads to excessive CPU and memory consumption, potentially degrading application responsiveness or exhausting server resources.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/getkin/kin-openapi: kin-openapi: Denial of Service via redundant regular expression compilation in query parameter decoding",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-100350"
},
{
"category": "external",
"summary": "RHBZ#2553584",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553584"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-100350",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-100350"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-100350",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100350"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f",
"url": "https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/releases/tag/v0.146.0",
"url": "https://github.com/getkin/kin-openapi/releases/tag/v0.146.0"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc",
"url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc"
}
],
"release_date": "2026-10-15T15:37:19.077000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-14T00:21:37+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:82637"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"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:L",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "github.com/getkin/kin-openapi: kin-openapi: Denial of Service via redundant regular expression compilation in query parameter decoding"
},
{
"cve": "CVE-2026-100351",
"cwe": {
"id": "CWE-289",
"name": "Authentication Bypass by Alternate Name"
},
"discovery_date": "2026-10-15T16:01:25.836287+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2553587"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in kin-openapi. An unauthenticated remote attacker can bypass authentication checks on protected routes by sending requests containing encoded path separators. This issue occurs because the request validation handler inspects the decoded URL path, while certain downstream routers dispatch requests using the raw encoded path. As a result, a request can be mistakenly treated as public and forwarded to a protected handler without required authentication.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/getkin/kin-openapi: kin-openapi: Authentication bypass via URL path decoding discrepancy",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-100351"
},
{
"category": "external",
"summary": "RHBZ#2553587",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553587"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-100351",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-100351"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-100351",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100351"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/commit/eda80e2676e9f577ceed2dd80e64f16083edb041",
"url": "https://github.com/getkin/kin-openapi/commit/eda80e2676e9f577ceed2dd80e64f16083edb041"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/releases/tag/v0.147.0",
"url": "https://github.com/getkin/kin-openapi/releases/tag/v0.147.0"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-23vg-4cjm-66q5",
"url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-23vg-4cjm-66q5"
}
],
"release_date": "2026-10-15T15:52:30.041000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-14T00:21:37+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:82637"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "github.com/getkin/kin-openapi: kin-openapi: Authentication bypass via URL path decoding discrepancy"
},
{
"cve": "CVE-2026-100352",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2026-10-15T16:01:52.384419+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2553588"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in kin-openapi. A remote, unauthenticated attacker can exploit this vulnerability by submitting a specially crafted YAML request containing non-finite numeric values, such as Not-a-Number or infinity, to an endpoint with numeric constraints. Because the validation process fails to restrict these unexpected values, the application triggers a runtime crash. This allows an attacker to cause a Denial of Service (DoS) on the affected service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "github.com/getkin/kin-openapi: kin-openapi: Denial of Service via improper handling of non-finite numeric values",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-100352"
},
{
"category": "external",
"summary": "RHBZ#2553588",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553588"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-100352",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-100352"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-100352",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100352"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/commit/4487f198ab8be0c37d6ca72c54f5dca4dc25270e",
"url": "https://github.com/getkin/kin-openapi/commit/4487f198ab8be0c37d6ca72c54f5dca4dc25270e"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/releases/tag/v0.148.0",
"url": "https://github.com/getkin/kin-openapi/releases/tag/v0.148.0"
},
{
"category": "external",
"summary": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-rj39-cv6w-8wv7",
"url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-rj39-cv6w-8wv7"
}
],
"release_date": "2026-10-15T15:54:25.834000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-14T00:21:37+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
"product_ids": [
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:82637"
}
],
"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 Hardened Images:hugo-0:0.168.0-0.1.hum1@aarch64",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@s390x",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@src",
"Red Hat Hardened Images:hugo-0:0.168.0-0.1.hum1@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "github.com/getkin/kin-openapi: kin-openapi: Denial of Service via improper handling of non-finite numeric values"
}
]
}
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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.