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):

* brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity (CVE-2026-13149) * tar: Node-tar: Denial of Service via malformed tar archive header (CVE-2026-59874) * tar: node-tar: Denial of Service via crafted gzip bomb (CVE-2026-59873)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Withdrawn by the publisher.

Affected: CleanStart: renovate

Package renovate version 44.32.4-r1 fixes 27 vulnerabilities: CVE-2026-59873, CVE-2026-59874, CVE-2026-59871, CVE-2026-59875, ghsa-r292-9mhp-454m...

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18.

Affected: npm: tar

### Summary

A checksum-valid tar archive with a negative base-256 encoded entry size can make `tar.replace()` loop forever while scanning the existing archive. Applications that update attacker-controlled tar archives can have a worker process pinned indefinitely, causing denial of service.

### Details

The public `tar.replace()` API scans the existing archive before appending replacement entries. During this scan, it parses each tar header and advances the archive position by the parsed entry size rounded to a 512-byte block boundary.

Tar supports base-256 encoded numeric fields. A crafted header can encode the entry size as `-512` while still carrying a valid checksum. The replace scan accepts that parsed negative size and uses it in the position-advance calculation.

For a size of `-512`, the computed body skip is `-512`. The scan then adds the normal 512-byte header step, resulting in no net progress. The scanner repeatedly parses the same header forever and never reaches the append step.

This is reachable through the supported package API when the existing archive file is attacker controlled. It does not rely on extraction, dependency behavior, or an uncaught exception.

### PoC

Save as `poc.mjs` in a project with the vulnerable package installed and run:

```bash node poc.mjs ```

```js import fs from 'node:fs' import os from 'node:os' import path from 'node:path' import { spawnSync } from 'node:child_process'

const oct = (b, n, off, len) => b.write(n.toString(…

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity fast-uri: fast-uri: Security policy bypass due to improper Unicode hostname canonicalization protobufjs: protobufjs: Denial of Service via uncontrolled recursion in protobuf decoding protobufjs: protobufjs: Denial of Service via crafted schema protobufjs: protobufjs: Arbitrary Code Execution via prototype pollution protobufjs: protobufjs: Data integrity impact due to prototype pollution protobufjs: protobufjs: Denial of Service via crafted JSON descriptors linkify-it: linkify-it: Denial of Service via algorithmic complexity vulnerability dompurify: DOMPurify: Cross-site scripting vulnerability allows code execution tar: node-tar: Denial of Service via crafted gzip bomb tar: Node-tar: Denial of Service via malformed tar archive header

brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity tar: node-tar: Denial of Service via crafted gzip bomb tar: Node-tar: Denial of Service via malformed tar archive header

Affected: Rocky Linux:9: nodejs, Rocky Linux:9: nodejs-nodemon, Rocky Linux:9: nodejs-packaging

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

Security Fix(es):

* brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity (CVE-2026-13149)

* tar: Node-tar: Denial of Service via malformed tar archive header (CVE-2026-59874)

* tar: node-tar: Denial of Service via crafted gzip bomb (CVE-2026-59873)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected: Ubuntu:Pro:14.04:LTS: node-tar, Ubuntu:Pro:16.04:LTS: node-tar, Ubuntu:18.04:LTS: node-tar, Ubuntu:Pro:20.04:LTS: node-tar, Ubuntu:22.04:LTS: node-tar, Ubuntu:24.04:LTS: node-tar, Ubuntu:25.10: node-tar, Ubuntu:26.04:LTS: node-tar

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Ansible Automation Platform ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen oder beliebigen Code auszuführen.