Vulnerability-Lookup

rlsa-2026:61383

Vulnerability from osv_rocky

Published

2026-08-31 18:05

Modified

2026-09-01 12:12

Summary

Important: nodejs:22 security update

Details

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)
nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)
nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

7.5 (High)


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

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:61383	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2509171	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2510856	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2511089	REPORT
	https://access.redhat.com/errata/RHSA-2026:61383	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "nodejs-nodemon",
        "purl": "pkg:rpm/rocky-linux/nodejs-nodemon?distro=rocky-linux-9\u0026epoch=0"
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  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
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  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:61383"
  },
  "details": "Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. \n\nSecurity Fix(es):\n\n* nodejs: Node.js: Unauthorized filesystem access due to Permission Model enforcement flaw (CVE-2026-58043)\n\n* nodejs: Node.js: Remote memory exhaustion via HTTP/2 retained header blocks (CVE-2026-56846)\n\n* nodejs: Node.js: Heap-use-after-free in HTTP/2 handling can lead to denial of service (CVE-2026-56848)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:61383",
  "modified": "2026-09-01T12:12:21.430767Z",
  "published": "2026-08-31T18:05:48.284338Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:61383"
    },
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      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2509171"
    },
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      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510856"
    },
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      "type": "REPORT",
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    },
    {
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    }
  ],
  "summary": "Important: nodejs:22 security update",
  "upstream": [
    "CVE-2026-56846",
    "CVE-2026-56848",
    "CVE-2026-58043"
  ]
}

CVE-2026-56846 (GCVE-0-2026-56846)

Vulnerability from cvelistv5 – Published: 2026-08-04 00:49 – Updated: 2026-08-04 15:03

Summary

A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion. This vulnerability affects Node.js **24.x** and **22.x**.

Severity

7.5 (High)


                        
                          CVSS:3.0/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 2026-08-04 14:28 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

hackerone mitre root

References

1 reference

URL	Tags
https://nodejs.org/en/blog/vulnerability/july-202…

Impacted products

1 product

Vendor	Product	Version
nodejs	node	Affected: 24.18.0 , ≤ 24.18.0 (semver) Affected: 22.23.1 , ≤ 22.23.1 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-56848 (GCVE-0-2026-56848)

Vulnerability from cvelistv5 – Published: 2026-08-04 15:57 – Updated: 2026-08-04 17:36

Summary

A flaw in Node.js HTTP/2 handling allows `nghttp2_session_mem_send()` to be called re-entrantly while `nghttp2_session_mem_recv()` is executing, resulting in a heap-use-after-free. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

Severity

7.5 (High)


                        
                          CVSS:3.0/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 2026-08-04 17:35 UTC

CWE

CWE-416 - Use After Free

Assigner

hackerone mitre root

References

1 reference

URL	Tags
https://nodejs.org/en/blog/vulnerability/july-202…

Impacted products

1 product

Vendor	Product	Version
nodejs	node	Affected: 26.5.0 , ≤ 26.5.0 (semver) Affected: 24.18.0 , ≤ 24.18.0 (semver) Affected: 22.23.1 , ≤ 22.23.1 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-58043 (GCVE-0-2026-58043)

Vulnerability from cvelistv5 – Published: 2026-07-30 06:02 – Updated: 2026-07-31 03:55

Summary

A flaw in Node.js Permission Model enforcement can over-grant filesystem access across radix-tree prefix boundaries. Under `--permission`, an attacker who is granted access to one path can abuse boundary handling to read from or write to paths outside the intended filesystem allowlist. This vulnerability affects Node.js **main**, **22.x**, **24.x**, and **26.x**.

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-30 00:00 UTC

CWE

CWE-284 - Improper Access Control - Generic

Assigner

hackerone mitre root

References

1 reference

URL	Tags
https://nodejs.org/en/blog/vulnerability/july-202…

Impacted products

1 product

Vendor	Product	Version
nodejs	node	Affected: 22.23.1 , ≤ 22.23.1 (semver) Affected: 24.18.0 , ≤ 24.18.0 (semver) Affected: 26.5.0 , ≤ 26.5.0 (semver)

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

rlsa-2026:61383

Vulnerability from osv_rocky

CVE-2026-56846 (GCVE-0-2026-56846)

CVE-2026-56848 (GCVE-0-2026-56848)

CVE-2026-58043 (GCVE-0-2026-58043)

Tags

Sightings

Nomenclature