Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-21637: TLS PSK/ALPN Callback Exceptions Bypass Error Handlers, Causing DoS and FD Leak NOTE: https://nodejs.org/en/blog/vulnerability/december-2025-security-releases#tls-pskalpn-callback-exceptions-bypass-error-handlers-causing-dos-and-fd-leak-cve-2026-21637---medium CVE-2025-59466: Uncatchable "Maximum call stack size exceeded" error on Node.js via async_hooks leads to process crashes bypassing error handlers CVE-2025-59465: Node.js HTTP/2 server crashes with unhandled error when receiving malformed HEADERS frame CVE-2025-55132: fs.futimes() Bypasses Read-Only Permission Model CVE-2025-55131: A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the vm module with the timeout option. Under specific timing conditions, buffers allocated with Buffer.alloc and other TypedArray instances like Uint8Array may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact. CVE-2025-55130: Bypass File System Permissions using crafted symlinks
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | nodejs20 | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-debuginfo | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-debugsource | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-devel | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-docs | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-full-i18n | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-libs | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-libs-debuginfo | 1:20.20.0-1.amzn2023.0.1 |
| Amazon Linux · 2023 | nodejs20-npm | 1:10.8.2-1.20.20.0.1.amzn2023.0.1 |
| Amazon Linux · 2023 | v8-11.3-devel | 3:11.3.244.8-1.20.20.0.1.amzn2023.0.1 |
Vulnerabilities 6
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High 7.5
A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by triggering an unh…
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High 7.1CVE-2025-55130 Public exploit
A flaw in Node.js’s Permissions model allows attackers to bypass `--allow-fs-read` and `--allow-fs-write` restrictions …
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High 7.1
A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when usin…
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Medium 5.9
We have identified a bug in Node.js error handling where "Maximum call stack size exceeded" errors become uncatchable w…
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Medium 5.9
A flaw in Node.js TLS error handling allows remote attackers to crash or exhaust resources of a TLS server when `pskCal…
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Low 2.8
A flaw in Node.js's permission model allows a file's access and modification timestamps to be changed via `futimes()` e…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-55130.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-55131.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-55132.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-59465.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-59466.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-21637.html