# CVE-2026-109829: nodejs24: undici is an HTTP client library for Node.js

CVE-2026-109829 is fixed in 18 products on 1 platform, first by DEBIAN-CVE-2026-109829, released November 1, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-109829
- Priority: High
- CVSS: 9.1 (important)
- EPSS: 0.0015
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 15, 2026

## Description

undici is an HTTP client library for Node.js. In versions 7.0.0 through 7.30.0 and 8.0.0 through 8.12.1, when an originless Agent composes the redirect and cache interceptors in that order with a shared cache store, the cache builds its key from the original request URL before the redirect handler changes the origin, so a response produced after a cross-origin redirect is stored under the original key. An attacker who controls the target of a redirect from a trusted URL can have their response cached under that trusted URL and served to later callers, allowing persistent cache poisoning, and the same key confusion lets a private, non-stored redirect response to a user-specific resource be stored under the original URL and served to a later unauthenticated caller, disclosing private data. Applications are affected only when an originless Agent, a shared cache store, and the redirect-then-cache composition are all used. The issue is fixed in undici 7.30.1 and 8.12.2, which verify the pr…

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-undici Debian 14 | 8.12.2+dfsg+~cs3.2.3-1 | [DEBIAN-CVE-2026-109829](https://patchblox.com/security/data/fix/linux/debian-cve-2026-109829.md) | Nov 1, 2026 |
| Linux | nodejs almalinux 10 | 1:22.23.4-1.el10_2 | [ALSA-2026:96094](https://patchblox.com/security/data/fix/linux/alsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs ol 10 | 1:22.23.4-1.el10_2 | [ELSA-2026-96094](https://patchblox.com/security/data/fix/linux/elsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs-devel almalinux 10 | 1:22.23.4-1.el10_2 | [ALSA-2026:96094](https://patchblox.com/security/data/fix/linux/alsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs-devel ol 10 | 1:22.23.4-1.el10_2 | [ELSA-2026-96094](https://patchblox.com/security/data/fix/linux/elsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs-docs almalinux 10 | 1:22.23.4-1.el10_2 | [ALSA-2026:96094](https://patchblox.com/security/data/fix/linux/alsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs-docs ol 10 | 1:22.23.4-1.el10_2 | [ELSA-2026-96094](https://patchblox.com/security/data/fix/linux/elsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs-full-i18n almalinux 10 | 1:22.23.4-1.el10_2 | [ALSA-2026:96094](https://patchblox.com/security/data/fix/linux/alsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs-full-i18n ol 10 | 1:22.23.4-1.el10_2 | [ELSA-2026-96094](https://patchblox.com/security/data/fix/linux/elsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs-libs almalinux 10 | 1:22.23.4-1.el10_2 | [ALSA-2026:96094](https://patchblox.com/security/data/fix/linux/alsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs-libs ol 10 | 1:22.23.4-1.el10_2 | [ELSA-2026-96094](https://patchblox.com/security/data/fix/linux/elsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs-npm almalinux 10 | 1:10.9.9-1.22.23.4.1.el10_2 | [ALSA-2026:96094](https://patchblox.com/security/data/fix/linux/alsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs-npm ol 10 | 1:10.9.9-1.22.23.4.1.el10_2 | [ELSA-2026-96094](https://patchblox.com/security/data/fix/linux/elsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs22 RHEL 10 | 22.23.4-1.el10_2 | [RHSA-2026:96094](https://patchblox.com/security/data/fix/linux/rhsa-2026-96094.md) | Nov 10, 2026 |
| Linux | nodejs22 rocky 10 | 1:22.23.4-1.el10_2 | [RLSA-2026:96094](https://patchblox.com/security/data/fix/linux/rlsa-2026-96094.md) | Nov 11, 2026 |
| Linux | nodejs24 RHEL 10 | 24.22.1-3.el10_2 | [RHSA-2026:96088](https://patchblox.com/security/data/fix/linux/rhsa-2026-96088.md) | Nov 10, 2026 |
| Linux | nodejs24 almalinux 10 | 1:24.22.1-3.el10_2 | [ALSA-2026:96088](https://patchblox.com/security/data/fix/linux/alsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24 amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24 rocky 10 | 1:24.22.1-3.el10_2 | [RLSA-2026:96088](https://patchblox.com/security/data/fix/linux/rlsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24-debuginfo amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-debugsource amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-devel almalinux 10 | 1:24.22.1-3.el10_2 | [ALSA-2026:96088](https://patchblox.com/security/data/fix/linux/alsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24-devel amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-docs almalinux 10 | 1:24.22.1-3.el10_2 | [ALSA-2026:96088](https://patchblox.com/security/data/fix/linux/alsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24-docs amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-full-i18n almalinux 10 | 1:24.22.1-3.el10_2 | [ALSA-2026:96088](https://patchblox.com/security/data/fix/linux/alsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24-full-i18n amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-libs almalinux 10 | 1:24.22.1-3.el10_2 | [ALSA-2026:96088](https://patchblox.com/security/data/fix/linux/alsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24-libs amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-libs-debuginfo amzn 2023 | 1:24.22.1-1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | nodejs24-npm almalinux 10 | 2:11.19.1-1.24.22.1.3.el10_2 | [ALSA-2026:96088](https://patchblox.com/security/data/fix/linux/alsa-2026-96088.md) | Nov 11, 2026 |
| Linux | nodejs24-npm amzn 2023 | 1:11.19.1-1.24.22.1.1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |
| Linux | v8-13.6-devel amzn 2023 | 3:13.6.233.17-1.24.22.1.1.amzn2023.0.1 | [ALAS2023-2026-3330](https://patchblox.com/security/data/fix/linux/alas2023-2026-3330.md) | Nov 7, 2026 |

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Data as of 2026-11-11T07:45:43Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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