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7.5Alta

CVE-2026-1526undici is vulnerable to Unbounded Memory Consumption in undici WebSocket permessage-deflate Decompression

undici undici; Red Hat Cryostat 4 on RHEL 9; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Publicada: (hace 8 meses)

Descripción

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.

Debilidad (CWE): CWE-409CWE-770

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

FabricanteProductoVersiones
cluster observability operator 1.5 —
cryostat 4 —
nodejs undici < 6.24.0
openshift ai 2.16 —
openshift data foundation 4.18 —
openshift devspaces 3.28 —
openshift pipelines 1.20 —
Red Hat Cluster Observability Operator 1.5.0 all versions
Red Hat Cryostat 4 on RHEL 9 all versions
Red Hat OpenShift Lightspeed all versions
Red Hat OpenShift Pipelines all versions
Red Hat Red Hat Developer Hub all versions
Red Hat Red Hat Developer Hub 1.8 all versions
Red Hat Red Hat Developer Hub 1.9 all versions
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support all versions
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support all versions
Red Hat Red Hat JBoss Enterprise Application Platform 8 —
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack —
Red Hat Red Hat OpenShift AI 2.16 all versions
Red Hat Red Hat OpenShift AI (RHOAI) all versions
Red Hat Red Hat Openshift Data Foundation 4.18 all versions
Red Hat Red Hat OpenShift Dev Spaces all versions
Red Hat Red Hat OpenShift Dev Spaces 3.28 all versions
Red Hat Red Hat OpenShift Pipelines 1.2 all versions
Red Hat Self-service automation portal 2 all versions
rhdh 1.8 —
rhdh 1.9 —
undici undici < 6.24.0; 7.0.0 < 7.24.0, fixed 6.24.0: 7.24.0

Referencias y parches

Coincidencias CPE (NVD) (2)
  • cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* < 6.24.0
  • cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* ≥ 7.0.0 < 7.24.0

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