RHSA-2026:50290
Vulnerability from csaf_redhat - Published: 2026-08-04 16:49 - Updated: 2026-08-05 15:21Summary
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:
grafana12.4:
* grafana12.4-12.4.6-0.4.hum1 (aarch64, x86_64)
* grafana12.4-12.4.6-0.4.hum1.src (src)
Security Fix(es):
grafana12.4:
* CVE-2026-14257
* CVE-2026-69152
* CVE-2026-69153
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 brace-expansion. A remote attacker can exploit this vulnerability by providing specially crafted input to the expand() function, which can lead to excessive memory consumption. This can cause a denial of service (DoS) by crashing the application due to an out-of-memory error.
7.5 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in the brace-expansion library. An attacker can provide specially crafted input to the `expand()` function, which fails to apply length restrictions when creating intermediate arrays. This oversight allows the attacker to exhaust system memory or block the event loop, leading to a Denial of Service (DoS). This vulnerability bypasses a previous mitigation for CVE-2026-14257.
7.5 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@aarch64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@src | — |
Vendor Fix
fix
|
|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Important
A flaw was found in PostCSS. A remote attacker can exploit this vulnerability by providing a specially crafted sourceMappingURL when a specific configuration (the 'from' parameter) is not set. This can cause the application to read and expose unintended source-map files, potentially revealing sensitive information about the application's source code.
7.5 (High)
Affected products
Fixed
3 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:grafana12-4-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
30 references
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"text": "A flaw was found in brace-expansion. A remote attacker can exploit this vulnerability by providing specially crafted input to the expand() function, which can lead to excessive memory consumption. This can cause a denial of service (DoS) by crashing the application due to an out-of-memory error.",
"title": "Vulnerability description"
},
{
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"text": "brace-expansion: Brace-expansion: Denial of Service via memory exhaustion in expand() function",
"title": "Vulnerability summary"
},
{
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"text": "A flaw was found in the brace-expansion npm package. The expand() function limits the number of generated results but does not bound the length of each result string. By chaining multiple brace groups, an attacker can keep the result count under the limit while making each result progressively longer, causing total memory consumption to grow until the Node.js process crashes with an uncatchable out-of-memory error. This affects any application that passes attacker-influenced strings to brace-expansion directly or transitively via minimatch or glob brace patterns.\n\nNote: In the majority of Red Hat products, brace-expansion is brought in as a transitive dependency of minimatch or glob and is not used at runtime. It is typically only invoked during build or development tooling and is not directly exposed to untrusted network input, reducing the practical exploitability of this flaw.\n\n```\n$ npm ls --omit=dev brace-expansion\nnpm@10.9.8 /usr/lib/node_modules/npm\n`-- minimatch@9.0.9\n `-- brace-expansion@2.0.2\n```",
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{
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},
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"cwe": {
"id": "CWE-22",
"name": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)"
},
"discovery_date": "2026-08-03T18:01:01.506065+00:00",
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}
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{
"category": "description",
"text": "A flaw was found in PostCSS. A remote attacker can exploit this vulnerability by providing a specially crafted sourceMappingURL when a specific configuration (the \u0027from\u0027 parameter) is not set. This can cause the application to read and expose unintended source-map files, potentially revealing sensitive information about the application\u0027s source code.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "postcss: PostCSS: Information disclosure via crafted sourceMappingURL",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat rates this flaw as Moderate because the information disclosed is limited to files with a .map extension. Source map files may contain source code paths and content, but the attacker cannot read arbitrary files on the system. Exploitation requires the application to process attacker-controlled CSS through PostCSS on the server side.",
"title": "Statement"
},
{
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"title": "CVSS score applicability"
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{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-69153",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-69153"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-69153",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69153"
},
{
"category": "external",
"summary": "https://github.com/postcss/postcss/commit/7beca139e70f9075c6b19700fcb00dd8033e5da8",
"url": "https://github.com/postcss/postcss/commit/7beca139e70f9075c6b19700fcb00dd8033e5da8"
},
{
"category": "external",
"summary": "https://github.com/postcss/postcss/releases/tag/8.5.19",
"url": "https://github.com/postcss/postcss/releases/tag/8.5.19"
},
{
"category": "external",
"summary": "https://github.com/postcss/postcss/security/advisories/GHSA-fxqj-rqcc-2cmp",
"url": "https://github.com/postcss/postcss/security/advisories/GHSA-fxqj-rqcc-2cmp"
}
],
"release_date": "2026-08-03T16:56:25.733000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-08-04T16:49:56+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:grafana12-4-main@aarch64",
"Red Hat Hardened Images:grafana12-4-main@src",
"Red Hat Hardened Images:grafana12-4-main@x86_64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:50290"
},
{
"category": "workaround",
"details": "Pass map: false when invoking PostCSS to disable source map auto-loading. This prevents the path traversal from being triggered, though it removes source map support entirely.",
"product_ids": [
"Red Hat Hardened Images:grafana12-4-main@aarch64",
"Red Hat Hardened Images:grafana12-4-main@src",
"Red Hat Hardened Images:grafana12-4-main@x86_64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:grafana12-4-main@aarch64",
"Red Hat Hardened Images:grafana12-4-main@src",
"Red Hat Hardened Images:grafana12-4-main@x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "postcss: PostCSS: Information disclosure via crafted sourceMappingURL"
}
]
}
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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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