Linux · 
Amazon Linux · Security advisory · April 13, 2026
Amazon Linux · Security advisory · April 13, 2026ALAS2023-2026-1576: Security update for 10 packages
ALAS2023-2026-1576, released April 13, 2026, fixes 6 CVEs across 10 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
6
None rated Critical
Exploited
0
None reported
Highest CVSS
7.5
Base score, 0 to 10
Highest EPSS
0.2544
97th percentile
Priority of the 6 CVEs
Patch now 0
Urgent 0
High 6
Routine 0
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| nodejs22 | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-debuginfo | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-debugsource | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-devel | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-docs | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-full-i18n | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-libs | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-libs-debuginfo | amzn 2023 | 1:22.22.2-1.amzn2023.0.1 |
| nodejs22-npm | amzn 2023 | 1:10.9.7-1.22.22.2.1.amzn2023.0.1 |
| v8-12.4-devel | amzn 2023 | 3:12.4.254.21-1.22.22.2.1.amzn2023.0.1 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-21710 | A flaw in Node.js HTTP request handling causes an uncaught `TypeError` when a request is received with a header named `__proto__` and the application accesses `req.headersDistinct`. When this occurs, `dest["__proto__"]` resolves to `Object.prototype` rather than `undefined`, causing `.push()` to be called on a non-array. This exception is thrown synchronously inside a property getter and cannot be intercepted by `error` event listeners, meaning it cannot be handled without wrapping every `req.headersDistinct` access in a `try/catch`. * This vulnerability affects all Node.js HTTP servers on **20.x, 22.x, 24.x, and v25.x** | 7.5 | 0.2544 | None reported |
| High | CVE-2026-21714 | Node.js 14 and 15 others: Missing Release of Memory after Effective Lifetime | 7.5 | 0.0043 | None reported |
| High | CVE-2026-21713 | Node.js 14 and 15 others: Observable Timing Discrepancy | 7.5 | 0.0037 | None reported |
| High | CVE-2026-21717 | A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their numeric value, making hash collisions trivially predictable. By crafting a request that causes many such collisions in V8's internal string table, an attacker can significantly degrade performance of the Node.js process. The most common trigger is any endpoint that calls `JSON.parse()` on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected hash table. This vulnerability affects **20.x, 22.x, 24.x, and 25.x**. | 7.5 | 0.0027 | None reported |
| High | CVE-2026-21715 | Node.js 14 and 15 others: Incorrect Permission Assignment for Critical Resource | 7.5 | 0.0015 | None reported |
| High | CVE-2026-21716 | Node.js 14 and 15 others: Missing Authorization | 7.5 | 0.0014 | None reported |
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