High [CVE-2026-48933] Denial of Service via large input to subtle.encrypt
This high-severity Red Hat Linux advisory covers CVE-2026-48933 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.6 Extended Update Support.
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Summary
A flaw in Node.js WebCrypto implementation can crash the process if the input of `subtle.encrypt()` is a multiple of 2GiB. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
A remote attacker could exploit this vulnerability by providing an input to the `subtle.encrypt()` function that is a multiple of 2 gigabytes (GiB). This could lead to a denial of service (DoS) by crashing the Node.js process.
This could lead to service unavailability in Red Hat environments where Node.js applications process untrusted data with WebCrypto. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-770. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Hardened Images.
Red Hat fixing advisory: RHSA-2026:35841, RHSA-2026:35842, RHSA-2026:39246, RHSA-2026:39868, RHSA-2026:41947, RHSA-2026:35891, RHSA-2026:35892, RHSA-2026:52399, RHSA-2026:28727, RHSA-2026:29012, RHSA-2026:30172, RHSA-2026:7378, RHSA-2026:9455.
Affected products named by the advisory: Red Hat package: nodejs24; Red Hat package: nodejs22.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
- nodejs24-1:24.18.0-1.el10_2
- nodejs22-1:22.23.1-2.el10_2
- nodejs22-1:22.23.1-2.el10_0
- nodejs:24-8100020260630152626.6d880403
- nodejs:22-8100020260703140402.6d880403
- nodejs:24-9080020260626074955.rhel9
- nodejs:22-9080020260626075442.rhel9
- nodejs:22-9060020260804140259.rhel9
- nodejs22-main-22.23.1-1.hum1
- nodejs24-main-24.18.0-0.1.hum1
- nodejs26-main-26.4.0-1.2.hum1
- nodejs25-main-25.9.0-1.1.hum1
- nodejs20-main-20.20.2-1.hum1
- RHSA-2026:35841
- RHSA-2026:35842
- RHSA-2026:39246
- RHSA-2026:39868
- RHSA-2026:41947
- RHSA-2026:35891
- RHSA-2026:35892
- RHSA-2026:52399
- RHSA-2026:28727
- RHSA-2026:29012
- RHSA-2026:30172
- RHSA-2026:7378
- RHSA-2026:9455
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
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