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CVE-2026-1528

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

CVSS 3.1 7.5 HIGHEUVD CVSS 3.1 7.5 CVSS 3.1 · ce714d77-add3-4f53-aff5-83d477b104bb · Secondary 7.5 HIGHCVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary 7.5 HIGHCVSS_V3 Publisher rating HIGHFixed by undici 6.24.0Fixed by undici 7.24.0KEV status unknown
Original advisory

cve-program · CVE-2026-1528

Published

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.

Read the publisher's advisory

euvd · EUVD-2026-11703

Published

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.

Read the publisher's advisory

nvd · CVE-2026-1528

Published

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.

Read the publisher's advisory

osv · GHSA-f269-vfmq-vjvj

Published

### Impact A 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. ### Workarounds There are no workarounds.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-1528

Published

undici

https://github.com/nodejs/undici/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "undici",
                    "product": "undici",
                    "collectionURL": "https://github.com/nodejs/undici/",
                    "packageName": "undici",
                    "repo": "https://github.com/nodejs/undici/",
                    "versions": [
                        {
                            "status": "affected",
                            "version": ">= 6.0.0 < 6.24.0; 7.0.0 < 7.24.0"
                        },
                        {
                            "status": "unaffected",
                            "version": "6.24.0: 7.24.0"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

euvd · EUVD-2026-11703

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Mar 12, 2026, 8:21:57 PM

dateUpdated: Sep 14, 2026, 12:04:20 PM

16 related source bulletins · separate from aliases

RHSA-2026:7302: Red Hat Security Advisory: nodejs:22 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-21710 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135 · CVE-2026-27904

RHSA-2026:7983: Red Hat Security Advisory: nodejs:22 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-21710 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135 · CVE-2026-27904

RHSA-2026:7080: Red Hat Security Advisory: nodejs22 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-21710 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135 · CVE-2026-27904

RHSA-2026:34342: Red Hat Security Advisory: Cluster Observability Operator 1.5.0

CVE-2020-7753 · CVE-2021-33623 · CVE-2024-4068 · CVE-2024-45338 · CVE-2024-52011 · CVE-2025-22868 · CVE-2025-22870 · CVE-2025-22872 · CVE-2025-47911 · CVE-2025-58190 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-4800 · CVE-2026-4867 · CVE-2026-6321 · CVE-2026-6322 · CVE-2026-6734 · CVE-2026-9277 · CVE-2026-9697 · CVE-2026-12143 · CVE-2026-12151 · CVE-2026-25680 · CVE-2026-25681 · CVE-2026-29063 · CVE-2026-32141 · CVE-2026-33228 · CVE-2026-33671 · CVE-2026-33814 · CVE-2026-33891 · CVE-2026-33894 · CVE-2026-33895 · CVE-2026-33896 · CVE-2026-33937 · CVE-2026-33938 · CVE-2026-33939 · CVE-2026-33940 · CVE-2026-33941 · CVE-2026-39821 · CVE-2026-42506 · CVE-2026-48779

RHSA-2026:13826: Red Hat Security Advisory: Red Hat Developer Hub 1.9.4 release.

CVE-2025-62718 · CVE-2025-69534 · CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-3118 · CVE-2026-4800 · CVE-2026-4926 · CVE-2026-27601 · CVE-2026-27904 · CVE-2026-29063 · CVE-2026-29074 · CVE-2026-29186 · CVE-2026-32141 · CVE-2026-32280 · CVE-2026-32282 · CVE-2026-33228 · CVE-2026-33891 · CVE-2026-33894 · CVE-2026-33895 · CVE-2026-33896 · CVE-2026-39983 · CVE-2026-40175 · CVE-2026-40895

RHSA-2026:5807: Red Hat Security Advisory: RHOAI 2.16.4 - Red Hat OpenShift AI

CVE-2024-25621 · CVE-2025-6193 · CVE-2025-12060 · CVE-2025-12638 · CVE-2025-12816 · CVE-2025-61726 · CVE-2025-61729 · CVE-2025-66031 · CVE-2025-66418 · CVE-2025-66626 · CVE-2025-68156 · CVE-2025-69873 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-25223 · CVE-2026-25639 · CVE-2026-29074 · CVE-2026-32141

RHSA-2026:7670: Red Hat Security Advisory: nodejs:24 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1527 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-2581 · CVE-2026-21637 · CVE-2026-21710 · CVE-2026-21711 · CVE-2026-21712 · CVE-2026-21713 · CVE-2026-21714 · CVE-2026-21715 · CVE-2026-21716 · CVE-2026-21717 · CVE-2026-26996 · CVE-2026-27135

RHSA-2026:7675: Red Hat Security Advisory: nodejs24 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1527 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-2581 · CVE-2026-21637 · CVE-2026-21710 · CVE-2026-21711 · CVE-2026-21712 · CVE-2026-21713 · CVE-2026-21714 · CVE-2026-21715 · CVE-2026-21716 · CVE-2026-21717 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135

RHSA-2026:73987: Red Hat Security Advisory: RHOAI 3.3.7 - Red Hat OpenShift AI

CVE-2025-61726 · CVE-2025-66471 · CVE-2025-71408 · CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-5422 · CVE-2026-6321 · CVE-2026-6734 · CVE-2026-9697 · CVE-2026-11816 · CVE-2026-11822 · CVE-2026-11824 · CVE-2026-12151 · CVE-2026-13149 · CVE-2026-15154 · CVE-2026-15378 · CVE-2026-16221 · CVE-2026-16745 · CVE-2026-18951 · CVE-2026-23490 · CVE-2026-25681 · CVE-2026-27136 · CVE-2026-27489 · CVE-2026-27893 · CVE-2026-28356 · CVE-2026-28500 · CVE-2026-28684 · CVE-2026-31230 · CVE-2026-31958 · CVE-2026-32274 · CVE-2026-32286 · CVE-2026-32597 · CVE-2026-33186 · CVE-2026-33231 · CVE-2026-33245 · CVE-2026-33811 · CVE-2026-33814 · CVE-2026-33815 · CVE-2026-33816 · CVE-2026-34445 · CVE-2026-34986 · CVE-2026-34993 · CVE-2026-35397 · CVE-2026-35536 · CVE-2026-39821 · CVE-2026-39828 · CVE-2026-39829 · CVE-2026-39830 · CVE-2026-39831 · CVE-2026-39832 · CVE-2026-39835 · CVE-2026-40110 · CVE-2026-41242 · CVE-2026-42215 · CVE-2026-42294 · CVE-2026-42296 · CVE-2026-42297 · CVE-2026-42338 · CVE-2026-42502 · CVE-2026-42508 · CVE-2026-44240 · CVE-2026-44431 · CVE-2026-44432 · CVE-2026-44727 · CVE-2026-44843 · CVE-2026-45736 · CVE-2026-46595 · CVE-2026-48526 · CVE-2026-48586 · CVE-2026-48710 · CVE-2026-48746 · CVE-2026-48779 · CVE-2026-49855 · CVE-2026-53550 · CVE-2026-54058 · CVE-2026-54283 · CVE-2026-55969 · CVE-2026-56853 · CVE-2026-56858 · CVE-2026-56859 · CVE-2026-56860 · CVE-2026-56862 · CVE-2026-59197 · CVE-2026-59199 · CVE-2026-59200 · CVE-2026-59204 · CVE-2026-59205 · CVE-2026-59869 · CVE-2026-59873 · CVE-2026-59874 · CVE-2026-59884 · CVE-2026-59885 · CVE-2026-59886 · CVE-2026-62384 · CVE-2026-63310 · CVE-2026-64834 · CVE-2026-64835 · CVE-2026-66036 · CVE-2026-66037 · CVE-2026-66038 · CVE-2026-66040 · CVE-2026-67322 · CVE-2026-67323 · CVE-2026-67325 · CVE-2026-68770 · CVE-2026-69152 · CVE-2026-69192 · CVE-2026-69243 · CVE-2026-69244 · CVE-2026-71281 · CVE-2026-73089 · CVE-2026-73415 · CVE-2026-73417 · CVE-2026-73627 · CVE-2026-78682 · CVE-2026-79674 · CVE-2026-79675 · CVE-2026-80205 · CVE-2026-81722 · CVE-2026-81724 · CVE-2026-81727 · CVE-2026-84375 · CVE-2026-84445

RHSA-2026:21772: Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.28.0 Release.

CVE-2025-14813 · CVE-2025-68121 · CVE-2026-0636 · CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-1605 · CVE-2026-2229 · CVE-2026-2327 · CVE-2026-5588 · CVE-2026-26996 · CVE-2026-27904 · CVE-2026-29074 · CVE-2026-30827 · CVE-2026-31802 · CVE-2026-32141 · CVE-2026-32280 · CVE-2026-32282 · CVE-2026-32305 · CVE-2026-33252 · CVE-2026-33810 · CVE-2026-34742 · CVE-2026-35051 · CVE-2026-39858 · CVE-2026-40477 · CVE-2026-40478 · CVE-2026-40611 · CVE-2026-40895 · CVE-2026-40912 · CVE-2026-40972 · CVE-2026-40973 · CVE-2026-40975 · CVE-2026-41240 · CVE-2026-42033 · CVE-2026-42035 · CVE-2026-42039 · CVE-2026-42041 · CVE-2026-42043 · CVE-2026-42044

RHSA-2026:17789: Red Hat Security Advisory: Red Hat build of Cryostat 4.2.0: new RHEL 9 container image security update

CVE-2026-1002 · CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-4800 · CVE-2026-4926 · CVE-2026-33186 · CVE-2026-33813 · CVE-2026-33815 · CVE-2026-33816 · CVE-2026-33870 · CVE-2026-33871 · CVE-2026-34986 · CVE-2026-39852 · CVE-2026-40895

RHSA-2026:7350: Red Hat Security Advisory: nodejs:24 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1527 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-2581 · CVE-2026-21637 · CVE-2026-21710 · CVE-2026-21711 · CVE-2026-21712 · CVE-2026-21713 · CVE-2026-21714 · CVE-2026-21715 · CVE-2026-21716 · CVE-2026-21717 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135

RHSA-2026:7123: Red Hat Security Advisory: nodejs:22 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-21710 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135 · CVE-2026-27904

RHSA-2026:7310: Red Hat Security Advisory: nodejs22 security update

CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-21710 · CVE-2026-25547 · CVE-2026-26996 · CVE-2026-27135 · CVE-2026-27904

RHSA-2026:21931: Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.20.5

CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-29063 · CVE-2026-33186 · CVE-2026-33211 · CVE-2026-34986

RHSA-2026:9742: Red Hat Security Advisory: Red Hat Developer Hub 1.8.6 release.

CVE-2025-62718 · CVE-2025-69534 · CVE-2025-69873 · CVE-2026-1525 · CVE-2026-1526 · CVE-2026-1528 · CVE-2026-2229 · CVE-2026-3118 · CVE-2026-4800 · CVE-2026-4926 · CVE-2026-25679 · CVE-2026-26996 · CVE-2026-27601 · CVE-2026-27904 · CVE-2026-29063 · CVE-2026-29074 · CVE-2026-29186 · CVE-2026-32141 · CVE-2026-33036 · CVE-2026-33228 · CVE-2026-33891 · CVE-2026-33894 · CVE-2026-33895 · CVE-2026-33896 · CVE-2026-39983 · CVE-2026-40175

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

nvd · CVE-2026-1528

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Modified

Weakness classifications: CWE-248 · CWE-1284

Original publisher date fields

published: 2026-03-12T21:16:25.330

lastModified: 2026-09-04T13:18:18.160

1 source CPE criteria · context only
  • cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

No normalized affected-package data is projected for this source revision. The original publisher record may contain additional product and version evidence; this does not establish that a package is unaffected.

Original source record · Cite this exact observation · Complete original publisher JSON

osv · GHSA-f269-vfmq-vjvj

Published

undici

npm

SEMVER · introduced 6.0.0 → fixed 6.24.0

undici

npm

SEMVER · introduced 7.0.0 → fixed 7.24.0

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 17:25 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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