RHSA-2026:8291
Vulnerability from csaf_redhat - Published: 2026-04-15 10:20 - Updated: 2026-08-03 10:56Summary
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:
golang1.26:
* golang1.26-1.26.2-1.1.hum1 (aarch64, x86_64)
* golang1.26-bin-1.26.2-1.1.hum1 (aarch64, x86_64)
* golang1.26-docs-1.26.2-1.1.hum1 (noarch)
* golang1.26-misc-1.26.2-1.1.hum1 (noarch)
* golang1.26-shared-1.26.2-1.1.hum1 (aarch64, x86_64)
* golang1.26-src-1.26.2-1.1.hum1 (noarch)
* golang1.26-tests-1.26.2-1.1.hum1 (noarch)
* golang1.26-1.26.2-1.1.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 golang.org/x/image. A remote attacker could exploit this vulnerability by providing a specially crafted WEBP image with an invalid, large size. This could cause the application to panic and crash on 32-bit platforms, leading to a Denial of Service (DoS).
6.5 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in gopls. When started with -listen using a hostless address (for example :8080) or with -port, the language server binds to 0.0.0.0 instead of localhost, exposing the debug interface to the local network and allowing arbitrary code execution by a malicious party on the same network.
8.8 (High)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:golang1-26-main@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
References
19 references
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"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/image. A remote attacker could exploit this vulnerability by providing a specially crafted WEBP image with an invalid, large size. This could cause the application to panic and crash on 32-bit platforms, leading to a Denial of Service (DoS).",
"title": "Vulnerability description"
},
{
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"text": "golang.org/x/image: golang: golang.org/x/image: Denial of Service via malformed WEBP image parsing",
"title": "Vulnerability summary"
},
{
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"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"
}
],
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"product_ids": [
"Red Hat Hardened Images:golang1-26-main@aarch64",
"Red Hat Hardened Images:golang1-26-main@noarch",
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"Red Hat Hardened Images:golang1-26-main@x86_64"
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"scores": [
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"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:H",
"version": "3.1"
},
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"Red Hat Hardened Images:golang1-26-main@noarch",
"Red Hat Hardened Images:golang1-26-main@src",
"Red Hat Hardened Images:golang1-26-main@x86_64"
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}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "golang.org/x/image: golang: golang.org/x/image: Denial of Service via malformed WEBP image parsing"
},
{
"cve": "CVE-2026-42503",
"cwe": {
"id": "CWE-1327",
"name": "Binding to an Unrestricted IP Address"
},
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2467285"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in gopls. When started with -listen using a hostless address (for example :8080) or with -port, the language server binds to 0.0.0.0 instead of localhost, exposing the debug interface to the local network and allowing arbitrary code execution by a malicious party on the same network.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang: golang.org/x/tools/gopls: gopls: Arbitrary code execution due to insecure network binding",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "gopls is vulnerable to arbitrary code execution when debug flags cause it to listen on all interfaces. Using -listen without an explicit host or the -port flag binds 0.0.0.0, so any attacker on the same network can reach the gopls debug endpoint and run code in the developer context. Red Hat exposure is in hummingbird golang1.25 and golang1.26 toolchains and the trivy component that bundles gopls for Go language support.",
"title": "Statement"
},
{
"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": {
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"Red Hat Hardened Images:golang1-26-main@noarch",
"Red Hat Hardened Images:golang1-26-main@src",
"Red Hat Hardened Images:golang1-26-main@x86_64"
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"references": [
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"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-42503"
},
{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467285"
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"summary": "https://go.dev/cl/774381",
"url": "https://go.dev/cl/774381"
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"summary": "https://go.dev/issue/79211",
"url": "https://go.dev/issue/79211"
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:8291"
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:golang1-26-main@aarch64",
"Red Hat Hardened Images:golang1-26-main@noarch",
"Red Hat Hardened Images:golang1-26-main@src",
"Red Hat Hardened Images:golang1-26-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang: golang.org/x/tools/gopls: gopls: Arbitrary code execution due to insecure network binding"
}
]
}
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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.
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