Vulnerability-Lookup

FKIE_CVE-2026-1528

Vulnerability from fkie_nvd - Published: 2026-03-12 21:16 - Updated: 2026-09-04 13:18

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process. Patches Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.

References

URL	Tags
ce714d77-add3-4f53-aff5-83d477b104bb	https://cna.openjsf.org/security-advisories.html	Vendor Advisory
ce714d77-add3-4f53-aff5-83d477b104bb	https://github.com/nodejs/undici/security/advisories/GHSA-f269-vfmq-vjvj	Vendor Advisory
ce714d77-add3-4f53-aff5-83d477b104bb	https://hackerone.com/reports/3537648	Permissions Required
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:13826
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:17789
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:21772
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:21931
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:34342
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:5807
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7080
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7123
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7302
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7310
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7350
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7670
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7675
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:7983
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/errata/RHSA-2026:9742
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-1528
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2447145
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1528.json

Impacted products

	Vendor	Product	Version
	nodejs	undici	*
	nodejs	undici	*

JSON

To clipboard

{
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            },
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      ],
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb"
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CVE-2026-1528 (GCVE-0-2026-1528)

Vulnerability from cvelistv5 – Published: 2026-03-12 20:21 – Updated: 2026-09-14 12:04

Title

undici is vulnerable to Malicious WebSocket 64-bit length overflows undici parser and crashes the client

Summary

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 2026-03-13 13:03 UTC

CWE

CWE-248 - Uncaught exception
CWE-1284 - Improper validation of specified quantity in input
CWE-248 - Uncaught Exception

Assigner

openjs redhat root

References

21 references

URL	Tags
https://github.com/nodejs/undici/security/advisor…
https://hackerone.com/reports/3537648
https://cna.openjsf.org/security-advisories.html
https://access.redhat.com/security/cve/CVE-2026-1528	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2447145	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:17789	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7310	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7080	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7675	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7123	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7670	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7983	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7302	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7350	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34342	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9742	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13826	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:5807	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21772	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:21931	vendor-advisoryx_refsource_REDHAT

Impacted products

26 products

Vendor	Product	Version
undici	undici	Affected: >= 6.0.0 < 6.24.0; 7.0.0 < 7.24.0 Unaffected: 6.24.0: 7.24.0
Red Hat	Cryostat 4 on RHEL 9	Unaffected: 4.2.0-9 , < * (rpm) cpe:/a:redhat:cryostat:4::el9
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 1:22.22.2-1.el10_1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.1
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 1:24.14.1-2.el10_1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.1
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 1:22.22.2-2.el10_0 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 8100020260331102257.6d880403 , < * (rpm) cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 8100020260408131901.6d880403 , < * (rpm) cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 9070020260401095228.rhel9 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 9070020260402152654.rhel9 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 9060020260409121057.rhel9 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Cluster Observability Operator 1.5.0	Unaffected: 1782839279 , < * (rpm) cpe:/a:redhat:cluster_observability_operator:1.5::el9
Red Hat	Cluster Observability Operator 1.5.0	Unaffected: 1782840539 , < * (rpm) cpe:/a:redhat:cluster_observability_operator:1.5::el9
Red Hat	Cluster Observability Operator 1.5.0	Unaffected: 1782839996 , < * (rpm) cpe:/a:redhat:cluster_observability_operator:1.5::el9
Red Hat	Red Hat Developer Hub 1.8	Unaffected: 1776784286 , < * (rpm) cpe:/a:redhat:rhdh:1.8::el9
Red Hat	Red Hat Developer Hub 1.9	Unaffected: 1777903262 , < * (rpm) cpe:/a:redhat:rhdh:1.9::el9
Red Hat	Red Hat OpenShift AI 2.16	Unaffected: 1774282136 , < * (rpm) cpe:/a:redhat:openshift_ai:2.16::el8
Red Hat	Red Hat OpenShift Dev Spaces 3.28	Unaffected: 1779814592 , < * (rpm) cpe:/a:redhat:openshift_devspaces:3.28::el9
Red Hat	Red Hat OpenShift Pipelines 1.2	Unaffected: 1779910201 , < * (rpm) cpe:/a:redhat:openshift_pipelines:1.20::el9
Red Hat	OpenShift Lightspeed	cpe:/a:redhat:openshift_lightspeed
Red Hat	OpenShift Pipelines	cpe:/a:redhat:openshift_pipelines:1
Red Hat	Red Hat Developer Hub	cpe:/a:redhat:rhdh:1
Red Hat	Red Hat JBoss Enterprise Application Platform 8	cpe:/a:redhat:jboss_enterprise_application_platform:8
Red Hat	Red Hat JBoss Enterprise Application Platform Expansion Pack	cpe:/a:redhat:jbosseapxp
Red Hat	Red Hat OpenShift AI (RHOAI)	cpe:/a:redhat:openshift_ai
Red Hat	Red Hat OpenShift Dev Spaces	cpe:/a:redhat:openshift_devspaces:3
Red Hat	Self-service automation portal 2	cpe:/a:redhat:ansible_portal:2

Credits

Matteo Collina Ulises Gascón

Show details on NVD website

JSON

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              "value": "\u003ch3\u003e\u003cspan\u003eImpact\u003c/span\u003e\u003c/h3\u003e\u003cp\u003eA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici\u0027s ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process.\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePatches\u003cbr\u003e\u003c/b\u003e\u003cbr\u003ePatched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.\u003cbr\u003e\u003c/p\u003e\u003cbr\u003e"
            }
          ],
          "value": "ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici\u0027s ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process.\n\nPatches\n\nPatched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-248",
              "description": "CWE-248 Uncaught exception",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-1284",
              "description": "CWE-1284 Improper validation of specified quantity in input",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-12T20:21:57.775Z",
        "orgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
        "shortName": "openjs"
      },
      "references": [
        {
          "url": "https://github.com/nodejs/undici/security/advisories/GHSA-f269-vfmq-vjvj"
        },
        {
          "url": "https://hackerone.com/reports/3537648"
        },
        {
          "url": "https://cna.openjsf.org/security-advisories.html"
        }
      ],
      "source": {
        "advisory": "GHSA-f269-vfmq-vjvj",
        "discovery": "UNKNOWN"
      },
      "title": "undici is vulnerable to Malicious WebSocket 64-bit length overflows undici parser and crashes the client",
      "x_generator": {
        "engine": "Vulnogram 1.0.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
    "assignerShortName": "openjs",
    "cveId": "CVE-2026-1528",
    "datePublished": "2026-03-12T20:21:57.775Z",
    "dateReserved": "2026-01-28T12:05:10.024Z",
    "dateUpdated": "2026-09-14T12:04:20.731Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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.

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.

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FKIE_CVE-2026-1528

CVE-2026-1528 (GCVE-0-2026-1528)

Tags

Sightings

Nomenclature

Related by attack behaviour