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 CNA under the redhat root

CNA scorecard C 66/100 over 142 records in the last 180 days details

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

To clipboard

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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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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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