RHSA-2026:86147
Vulnerability from csaf_redhat - Published: 2026-10-20 19:07 - Updated: 2026-10-30 15:13Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
nodejs26:
* nodejs26-26.11.1-0.5.hum1 (aarch64, s390x, x86_64)
* nodejs26-bin-26.11.1-0.5.hum1 (noarch)
* nodejs26-devel-26.11.1-0.5.hum1 (aarch64, s390x, x86_64)
* nodejs26-docs-26.11.1-0.5.hum1 (noarch)
* nodejs26-full-i18n-26.11.1-0.5.hum1 (aarch64, s390x, x86_64)
* nodejs26-libs-26.11.1-0.5.hum1 (aarch64, s390x, x86_64)
* nodejs26-npm-11.20.0-1.26.11.1.0.5.hum1 (noarch)
* nodejs26-npm-bin-26.11.1-0.5.hum1 (noarch)
* v8-14.6-devel-14.6.202.34-1.26.11.1.0.5.hum1 (aarch64, s390x, x86_64)
* nodejs26-26.11.1-0.5.hum1.src (src)
Security Fix(es):
nodejs26:
* CVE-2026-87018
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 undici. A remote server can cause a Denial of Service (DoS) by initiating a Transport Layer Security (TLS) renegotiation and presenting a certificate with a mismatched hostname. Because the client application fails to properly handle the resulting verification error, an uncaught assertion is triggered, terminating the client process and disrupting active network requests.
7.5 (High)
Affected products
Fixed
28 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:nodejs26-0:26.11.1-0.5.hum1@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-0:26.11.1-0.5.hum1@s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-0:26.11.1-0.5.hum1@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-0:26.11.1-0.5.hum1@x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-bin-0:26.11.1-0.5.hum1@noarch@public-hummingbird-aarch64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-bin-0:26.11.1-0.5.hum1@noarch@public-hummingbird-s390x-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-bin-0:26.11.1-0.5.hum1@noarch@public-hummingbird-x86_64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-devel-0:26.11.1-0.5.hum1@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-devel-0:26.11.1-0.5.hum1@s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-devel-0:26.11.1-0.5.hum1@x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-docs-0:26.11.1-0.5.hum1@noarch@public-hummingbird-aarch64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-docs-0:26.11.1-0.5.hum1@noarch@public-hummingbird-s390x-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-docs-0:26.11.1-0.5.hum1@noarch@public-hummingbird-x86_64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-full-i18n-0:26.11.1-0.5.hum1@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-full-i18n-0:26.11.1-0.5.hum1@s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-full-i18n-0:26.11.1-0.5.hum1@x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-libs-0:26.11.1-0.5.hum1@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-libs-0:26.11.1-0.5.hum1@s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-libs-0:26.11.1-0.5.hum1@x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-npm-0:11.20.0-1.26.11.1.0.5.hum1@noarch@public-hummingbird-aarch64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-npm-0:11.20.0-1.26.11.1.0.5.hum1@noarch@public-hummingbird-s390x-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-npm-0:11.20.0-1.26.11.1.0.5.hum1@noarch@public-hummingbird-x86_64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-npm-bin-0:26.11.1-0.5.hum1@noarch@public-hummingbird-aarch64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-npm-bin-0:26.11.1-0.5.hum1@noarch@public-hummingbird-s390x-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:nodejs26-npm-bin-0:26.11.1-0.5.hum1@noarch@public-hummingbird-x86_64-rpms | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:v8-14.6-devel-0:14.6.202.34-1.26.11.1.0.5.hum1@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:v8-14.6-devel-0:14.6.202.34-1.26.11.1.0.5.hum1@s390x | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:v8-14.6-devel-0:14.6.202.34-1.26.11.1.0.5.hum1@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
References
11 references
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{
"category": "other",
"text": "This vulnerability is evaluated as an Important severity flaw for Red Hat products because an unauthenticated remote server can terminate a client Node.js process, halting all concurrent tasks and in-flight operations. In typical Red Hat deployments, containerized microservices and administrative consoles rely on undici or runtime fetch APIs to communicate with external web endpoints. Exploitation requires the client application to establish an outbound TLS 1.2 connection to a malicious or compromised endpoint that initiates session renegotiation with a non-matching certificate. Workloads communicating strictly with trusted endpoints or utilizing TLS 1.3 connections are inherently protected, as TLS 1.3 does not permit server-driven renegotiation.",
"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": {
"fixed": [
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-87018"
},
{
"category": "external",
"summary": "RHBZ#2553677",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2553677"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-87018",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-87018"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-87018",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-87018"
},
{
"category": "external",
"summary": "https://cna.openjsf.org/security-advisories.html",
"url": "https://cna.openjsf.org/security-advisories.html"
},
{
"category": "external",
"summary": "https://github.com/nodejs/undici/security/advisories/GHSA-qrxm-fqhp-jwvm",
"url": "https://github.com/nodejs/undici/security/advisories/GHSA-qrxm-fqhp-jwvm"
}
],
"release_date": "2026-10-15T18:38:25.613000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-10-20T19:07:45+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/",
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"restart_required": {
"category": "none"
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"url": "https://access.redhat.com/errata/RHSA-2026:86147"
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"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"
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "undici: undici: Denial of Service via TLS renegotiation with mismatched certificate"
}
]
}
Loading…
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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.