CVE-2026-1526

highPriorität · verfolgen · 0EPSS 0.012 · 67. PerzentilDEEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
1.17% (67th) EPSS
CVSS 7.5 · high
Is it mine?
13 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · cert_bund · nvd

EPSS · bewertet 2026-10-27

The undici WebSocket client is vulnerable to a denial-of-service attack via unbounded memory consumption during permessage-deflate decompression. When a WebSocket connection negotiates the permessage-deflate extension, the client decompresses incoming compressed frames without enforcing any limit on the decompressed data size. A malicious WebSocket server can send a small compressed frame (a "decompression bomb") that expands to an extremely large size in memory, causing the Node.js process to exhaust available memory and crash or become unresponsive. The vulnerability exists in the PerMessageDeflate.decompress() method, which accumulates all decompressed chunks in memory and concatenates them into a single Buffer without checking whether the total size exceeds a safe threshold.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

  • Behobennodejs-1:22.22.2-1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-devel-1:22.22.2-1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-docs-1:22.22.2-1.el10_1.noarch as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-full-i18n-1:22.22.2-1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-libs-1:22.22.2-1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-npm-1:10.9.7-1.22.22.2.1.el10_1.x86_64 as component of SUSE Liberty Linux 10suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-1:22.22.2-1.module+el8.10.0+24148+847b6786.x86_64::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-devel-1:22.22.2-1.module+el8.10.0+24148+847b6786.x86_64::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-docs-1:22.22.2-1.module+el8.10.0+24148+847b6786.noarch::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-full-i18n-1:22.22.2-1.module+el8.10.0+24148+847b6786.x86_64::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-libs-1:22.22.2-1.module+el8.10.0+24148+847b6786.x86_64::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-nodemon-0:3.0.1-1.module+el8.10.0+24148+847b6786.noarch::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-packaging-0:2021.06-6.module+el8.10.0+24148+847b6786.noarch::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennodejs-packaging-bundler-0:2021.06-6.module+el8.10.0+24148+847b6786.noarch::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobennpm-1:10.9.7-1.22.22.2.1.module+el8.10.0+24148+847b6786.x86_64::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenv8-12.4-devel-3:12.4.254.21-1.22.22.2.1.module+el8.10.0+24148+847b6786.x86_64::nodejs:22 as component of SUSE Liberty Linux 8suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.5
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HsecondaryAusnutzbarkeit 3.9 · Auswirkung 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HsecondaryAusnutzbarkeit 3.9 · Auswirkung 3.6
v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-409USCWE-409USCWE-770US
05

betroffene Produkte (13)

Betroffene Produkte und Versionsbereiche.

06

Advisories (4)

Hersteller- und Ökosystem-Meldungen dazu.

  • RHSA-2026:7080security update for nodejs222026-04-08csaf · suse_csafDE

    security update for nodejs22

  • RHSA-2026:7123security update for nodejs2026-04-08csaf · suse_csafDE

    security update for nodejs

  • WID-SEC-W-2026-0933IBM App Connect Enterprise (Hono und Undici): Mehrere SchwachstellenDeutsch2026-03-30csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen oder andere nicht näher bezeichnete Angriffe durchzuführen.

  • GHSA-vrm6-8vpv-qv8qUndici has Unbounded Memory Consumption in WebSocket permessage-deflate Decompression2026-03-13ghsa · osvUS

    ## Description The undici WebSocket client is vulnerable to a denial-of-service attack via unbounded memory consumption during permessage-deflate decompression. When a WebSocket connection negotiates the permessage-deflate extension, the client decompresses incoming compressed frames without enforcing any limit on the decompressed data size. A malicious WebSocket server can send a small compressed frame (a "decompression bomb") that expands to an extremely large size in memory, causing the Node.js process to exhaust available memory and crash or become unresponsive. The vulnerability exists in the `PerMessageDeflate.decompress()` method, which accumulates all decompressed chunks in memory and concatenates them into a single Buffer without checking whether the total size exceeds a safe threshold. ## Impact - Remote denial of service against any Node.js application using undici's WebSocket client - A single compressed WebSocket frame of ~6 MB can decompress to ~1 GB or more - Memory exhaustion occurs in native/external memory, bypassing V8 heap limits - No application-level mitigation is possible as decompression occurs before message delivery ### Patches Users should upgrade to fixed versions. ### Workarounds No workaround are possible.

07

auch bekannt als (3)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdcert_bundnvdosvsuse_csafNVDCVE.orgMITRE
veröffentlicht 2026-03-12geändert 2026-09-04
09

Referenzen (33)

Externe Belege — Patches, Meldungen, Analysen.

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