Vulnerability-Lookup

RHSA-2026:45360

Vulnerability from csaf_redhat - Published: 2026-07-24 16:53 - Updated: 2026-08-17 06:18

Summary

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: * nodejs26-26.5.0-1.4.hum1 (aarch64, x86_64) * nodejs26-bin-26.5.0-1.4.hum1 (noarch) * nodejs26-devel-26.5.0-1.4.hum1 (aarch64, x86_64) * nodejs26-docs-26.5.0-1.4.hum1 (noarch) * nodejs26-full-i18n-26.5.0-1.4.hum1 (aarch64, x86_64) * nodejs26-libs-26.5.0-1.4.hum1 (aarch64, x86_64) * nodejs26-npm-11.17.0-1.26.5.0.1.4.hum1 (noarch) * nodejs26-npm-bin-26.5.0-1.4.hum1 (noarch) * v8-14.6-devel-14.6.202.34-1.26.5.0.1.4.hum1 (aarch64, x86_64) * nodejs26-26.5.0-1.4.hum1.src (src) Security Fix(es): nodejs26: * CVE-2026-13149 * CVE-2026-14257

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.

CVE-2026-13149

A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the `expand()` function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-loop blocking. This can result in a Denial of Service (DoS) for the affected system.

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-1333 - Inefficient Regular Expression Complexity

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:nodejs26-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:nodejs26-main@noarch	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:nodejs26-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:nodejs26-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

CVE-2026-14257

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)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:nodejs26-main@aarch64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:nodejs26-main@noarch	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:nodejs26-main@src	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat Hardened Images:nodejs26-main@x86_64	—	Vendor Fix fix Workaround

Threats

Impact Important

References

18 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:45360	self
https://access.redhat.com/security/cve/CVE-2026-13149	external
https://access.redhat.com/security/cve/CVE-2026-14257	external
https://access.redhat.com/security/updates/classi…	external
https://images.redhat.com/	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-13149	self
https://bugzilla.redhat.com/show_bug.cgi?id=2494813	external
https://www.cve.org/CVERecord?id=CVE-2026-13149	external
https://nvd.nist.gov/vuln/detail/CVE-2026-13149	external
https://github.com/juliangruber/brace-expansion/c…	external
https://www.npmjs.com/package/brace-expansion	external
https://access.redhat.com/security/cve/CVE-2026-14257	self
https://bugzilla.redhat.com/show_bug.cgi?id=2506433	external
https://www.cve.org/CVERecord?id=CVE-2026-14257	external
https://nvd.nist.gov/vuln/detail/CVE-2026-14257	external
https://github.com/juliangruber/brace-expansion	external
https://github.com/juliangruber/brace-expansion/c…	external

JSON

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        "name": "Inefficient Regular Expression Complexity"
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      "discovery_date": "2026-06-30T10:00:59.843854+00:00",
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          "text": "A flaw was found in brace-expansion. An attacker can exploit a vulnerability in the `expand()` function by providing a specially crafted string. This string, containing consecutive non-expanding brace groups, can trigger exponential-time complexity, leading to significant CPU consumption and event-loop blocking. This can result in a Denial of Service (DoS) for the affected system.",
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          "date": "2026-07-24T16:53:35+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": [
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            "Red Hat Hardened Images:nodejs26-main@noarch",
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          "details": "There is no practical mitigation for this vulnerability. The brace-expansion package is typically a transitive dependency pulled in via minimatch and glob, making it difficult to isolate. Users should upgrade to a fixed version of brace-expansion when one becomes available.",
          "product_ids": [
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            "Red Hat Hardened Images:nodejs26-main@x86_64"
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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"
          },
          "products": [
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            "Red Hat Hardened Images:nodejs26-main@noarch",
            "Red Hat Hardened Images:nodejs26-main@src",
            "Red Hat Hardened Images:nodejs26-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity"
    },
    {
      "cve": "CVE-2026-14257",
      "cwe": {
        "id": "CWE-770",
        "name": "Allocation of Resources Without Limits or Throttling"
      },
      "discovery_date": "2026-07-23T14:01:26.376839+00:00",
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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"
        },
        {
          "category": "summary",
          "text": "brace-expansion: Brace-expansion: Denial of Service via memory exhaustion in expand() function",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "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```",
          "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"
        }
      ],
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          "product_ids": [
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            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:45360"
        },
        {
          "category": "workaround",
          "details": "Do not pass untrusted or user-controlled input to brace-expansion\u0027s expand() function or to libraries that use it for glob pattern matching (such as minimatch or glob). Validate and sanitize any brace patterns before expansion.\n\nWhere possible, upgrade to brace-expansion 1.1.17, 2.1.3, 3.0.3, or 5.0.8 which add a maxLength option that bounds accumulated output.\n\nAs an additional defense-in-depth measure, enforce memory limits on Node.js processes using operating system resource controls such as cgroups or Kubernetes resource limits (spec.containers[].resources.limits.memory) to prevent a single process from exhausting system memory and causing a wider outage.",
          "product_ids": [
            "Red Hat Hardened Images:nodejs26-main@aarch64",
            "Red Hat Hardened Images:nodejs26-main@noarch",
            "Red Hat Hardened Images:nodejs26-main@src",
            "Red Hat Hardened Images:nodejs26-main@x86_64"
          ]
        }
      ],
      "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": [
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            "Red Hat Hardened Images:nodejs26-main@noarch",
            "Red Hat Hardened Images:nodejs26-main@src",
            "Red Hat Hardened Images:nodejs26-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "brace-expansion: Brace-expansion: Denial of Service via memory exhaustion in expand() function"
    }
  ]
}

CVE-2026-13149 (GCVE-0-2026-13149)

Vulnerability from cvelistv5 – Published: 2026-06-30 08:30 – Updated: 2026-07-08 11:38

Summary

brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.

Severity

7.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-30 12:43 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-407 - Inefficient Algorithmic Complexity

Assigner

seal

References

2 references

URL	Tags
https://github.com/juliangruber/brace-expansion/c…
https://www.npmjs.com/package/brace-expansion

Impacted products

1 product

Vendor	Product	Version
juliangruber	brace-expansion	Affected: 0 , ≤ 5.0.6 (semver)

Credits

bnbdr

Show details on NVD website

JSON

To clipboard

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CVE-2026-14257 (GCVE-0-2026-14257)

Vulnerability from cvelistv5 – Published: 2026-07-23 12:54 – Updated: 2026-07-23 14:44

Title

brace-expansion DoS via unbounded expansion length causing an out-of-memory process crash

Summary

brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion. The expand() function limits the number of results with a max option (default 100,000) but does not bound the length of each result string. By chaining multiple brace groups, an attacker keeps the result count under the limit while making each result progressively longer, so total memory scales with both count and string length until the process hits a fatal, uncatchable out-of-memory error. About 7.5 KB of input ('{a,b}'.repeat(1500)) crashes a default Node.js process. Any application that passes attacker-influenced strings to brace-expansion.expand() - directly or transitively via minimatch / glob brace patterns - can be crashed by a small request. Fixed in 5.0.8 by adding a maxLength option (default 4,000,000) that bounds accumulated output and intermediate arrays.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-23 14:44 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

seal

References

3 references

URL	Tags
https://www.npmjs.com/package/brace-expansion
https://github.com/juliangruber/brace-expansion
https://github.com/juliangruber/brace-expansion/c…

Impacted products

1 product

Vendor	Product	Version
juliangruber	brace-expansion	Affected: 0 , ≤ 5.0.7 (semver)

Credits

bnbdr

Show details on NVD website

JSON

To clipboard

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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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

RHSA-2026:45360

CVE-2026-13149 (GCVE-0-2026-13149)

CVE-2026-14257 (GCVE-0-2026-14257)

Tags

Sightings

Nomenclature