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ALSA-2026:7350 — Important: nodejs:24 security update

Affected: AlmaLinux:9: nodejs, AlmaLinux:9: nodejs-devel, AlmaLinux:9: nodejs-docs, AlmaLinux:9: nodejs-full-i18n, AlmaLinux:9: nodejs-libs, AlmaLinux:9: nodejs-nodemon, AlmaLinux:9: nodejs-packaging, AlmaLinux:9: nodejs-packaging-bundler, AlmaLinux:9: npm, AlmaLinux:9: v8-13.6-devel

Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.

Security Fix(es):

* nodejs: Nodejs denial of service (CVE-2026-21637) * brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion (CVE-2026-25547) * minimatch: minimatch: Denial of Service via specially crafted glob patterns (CVE-2026-26996) * undici: Undici: Denial of Service due to uncontrolled resource consumption (CVE-2026-2581) * undici: Undici: HTTP header injection and request smuggling vulnerability (CVE-2026-1527) * undici: undici: Denial of Service via unbounded memory consumption during WebSocket permessage-deflate decompression (CVE-2026-1526) * undici: Undici: Denial of Service via invalid WebSocket permessage-deflate extension parameter (CVE-2026-2229) * undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers (CVE-2026-1525) * undici: undici: Denial of Service via crafted WebSocket frame with large length (CVE-2026-1528) * nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination (CVE-2026-27135) * Node.js: Node.js: Denial of Service via malformed Internationalized Domain Name processing (CVE-2026-21712) * Node.js: Node.js: Denial of Service due to crafted HTTP `__proto__` header (CVE-2026-21710) * Node.js: Node.js: Information disclosure due to `fs.realpathSync.native()` bypassing filesyste…

BELL-CVE-2026-1527

Affected: Alpaquita:23: nodejs, Alpaquita:25: nodejs, Alpaquita:stream: nodejs, BellSoft Hardened Containers:23: nodejs, BellSoft Hardened Containers:25: nodejs, BellSoft Hardened Containers:stream: nodejs

certfr-2026-avi-0500 — De multiples vulnérabilités ont été découvertes dans VMware Tanzu. Elles permettent à un attaquant de provoquer un prob…

certfr-2026-avi-0500

Withdrawn: CLEANSTART-2026-CE10526 — Security fixes for CVE-2025-64756, CVE-2025-69873, CVE-2026-1525, CVE-2026-1526, CVE-2026-1527, CVE-2026-1528, CVE-2026…

Withdrawn by the publisher.

Affected: CleanStart: renovate

Multiple security vulnerabilities affect the renovate package. These issues are resolved in later releases. See references for individual vulnerability details.

EUVD-2026-275994

fkie_cve-2026-1527

ImpactWhen an application passes user-controlled input to the upgrade option of client.request(), an attacker can inject CRLF sequences (\r\n) to:

* Inject arbitrary HTTP headers * Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis, Memcached, Elasticsearch) The vulnerability exists because undici writes the upgrade value directly to the socket without validating for invalid header characters:

// lib/dispatcher/client-h1.js:1121 if (upgrade) { header += `connection: upgrade\r\nupgrade: ${upgrade}\r\n` }

GHSA-4992-7rv2-5pvq — Undici has CRLF Injection in undici via `upgrade` option

Affected: npm: undici

### Impact

When an application passes user-controlled input to the `upgrade` option of `client.request()`, an attacker can inject CRLF sequences (`\r\n`) to:

1. Inject arbitrary HTTP headers 2. Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis, Memcached, Elasticsearch)

The vulnerability exists because undici writes the `upgrade` value directly to the socket without validating for invalid header characters:

```javascript // lib/dispatcher/client-h1.js:1121 if (upgrade) { header += `connection: upgrade\r\nupgrade: ${upgrade}\r\n` } ```

### Patches

Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.

### Workarounds

Sanitize the `upgrade` option string before passing to undici:

```javascript function sanitizeUpgrade(value) { if (/[\r\n]/.test(value)) { throw new Error('Invalid upgrade value') } return value }

client.request({ upgrade: sanitizeUpgrade(userInput) }) ```

RHSA-2026:56431 — Red Hat Security Advisory: Red Hat OpenShift Data Foundation 4.18.27 security, enhancement & bug fix update

golang: net/url: Memory exhaustion in query parameter parsing in net/url crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate js-yaml: js-yaml prototype pollution in merge react-router: React Router unexpected external redirect undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers undici: undici: Denial of Service via unbounded memory consumption during WebSocket permessage-deflate decompression undici: Undici: HTTP header injection and request smuggling vulnerability undici: Undici: Denial of Service via invalid WebSocket permessage-deflate extension parameter fast-uri: fast-uri: Path traversal vulnerability allows bypass of security policies fast-uri: fast-uri: URI authority bypass due to improper delimiter handling undici: Undici: Response queue poisoning on reused keep-alive sockets can lead to incorrect response delivery. undici: undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing postcss-selector-parser: Postcss: Denial of Service via uncontrolled recursion in AST Serialization undici: undici vulnerable to HTTP header injection via Set-Cookie percent-decoding undici: undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy undici: undici: Weakening of cookie SameSite policy due to incorrect parsing of Set-Cookie header form-data: form-data: Form field override via CRLF injection undici: undici: Denial…

RHSA-2026:7350 — Red Hat Security Advisory: nodejs:24 security update

undici: Undici: HTTP Request Smuggling and Denial of Service due to duplicate Content-Length headers undici: undici: Denial of Service via unbounded memory consumption during WebSocket permessage-deflate decompression undici: Undici: HTTP header injection and request smuggling vulnerability undici: undici: Denial of Service via crafted WebSocket frame with large length undici: Undici: Denial of Service via invalid WebSocket permessage-deflate extension parameter undici: Undici: Denial of Service due to uncontrolled resource consumption nodejs: Nodejs denial of service Node.js: Node.js: Denial of Service due to crafted HTTP `__proto__` header Node.js: Node.js: Unauthorized inter-process communication due to missing Unix Domain Socket permission checks Node.js: Node.js: Denial of Service via malformed Internationalized Domain Name processing Node.js: Node.js: Information disclosure via timing oracle in HMAC verification Node.js: Node.js: Memory leak and Denial of Service via crafted HTTP/2 WINDOW_UPDATE frames Node.js: Node.js: Information disclosure due to `fs.realpathSync.native()` bypassing filesystem read restrictions nodejs: Node.js: Permission bypass allows unauthorized modification of file permissions and ownership via incomplete security fix. nodejs: v8: Node.js: Denial of Service via V8 string hashing mechanism due to predictable hash collisions brace-expansion: brace-expansion: Denial of Service via unbounded brace range expansion minimatch: minimatch: Denial of Serv…

UBUNTU-CVE-2026-1527

Affected: Ubuntu:24.04:LTS: node-undici, Ubuntu:25.10: node-undici, Ubuntu:26.04:LTS: node-undici

ImpactWhen an application passes user-controlled input to the upgrade option of client.request(), an attacker can inject CRLF sequences (\r\n) to: * Inject arbitrary HTTP headers * Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis, Memcached, Elasticsearch) The vulnerability exists because undici writes the upgrade value directly to the socket without validating for invalid header characters: // lib/dispatcher/client-h1.js:1121 if (upgrade) { header += `connection: upgrade\r\nupgrade: ${upgrade}\r\n` }

WID-SEC-W-2026-0933 — IBM App Connect Enterprise (Hono und Undici): Mehrere Schwachstellen

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.