# CVE-2026-69153: node-postcss: PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstra...

CVE-2026-69153 is fixed in 7 products on 1 platform, first by DEBIAN-CVE-2026-69153, released August 6, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-69153
- Priority: Routine
- CVSS: 5.3 (medium)
- EPSS: 0.0045
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 3, 2026

## Description

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | flightctl RHEL 10 | 1.1.4-1.el10em | [RHSA-2026:68334](https://patchblox.com/security/data/fix/linux/rhsa-2026-68334.md) | Sep 17, 2026 |
| Linux | node-postcss Debian 14 | 8.5.23+~cs10.2.23-1 | [DEBIAN-CVE-2026-69153](https://patchblox.com/security/data/fix/linux/debian-cve-2026-69153.md) | Aug 6, 2026 |
| Linux | python-jupytext Fedora 43 | 1.19.6-1.fc43 | [FEDORA-2026-3942AB86FD](https://patchblox.com/security/data/fix/linux/fedora-2026-3942ab86fd.md) | Oct 5, 2026 |
| Linux | python-jupytext-doc Fedora 43 | 1.19.6-1.fc43 | [FEDORA-2026-3942AB86FD](https://patchblox.com/security/data/fix/linux/fedora-2026-3942ab86fd.md) | Oct 5, 2026 |
| Linux | python3-jupyterlab-jupytext Fedora 43 | 1.19.6-1.fc43 | [FEDORA-2026-3942AB86FD](https://patchblox.com/security/data/fix/linux/fedora-2026-3942ab86fd.md) | Oct 5, 2026 |
| Linux | python3-jupytext Fedora 43 | 1.19.6-1.fc43 | [FEDORA-2026-3942AB86FD](https://patchblox.com/security/data/fix/linux/fedora-2026-3942ab86fd.md) | Oct 5, 2026 |
| Linux | rh-podman-desktop RHEL 10 | 1.1.2-1.el10_2 | [RHSA-2026:57590](https://patchblox.com/security/data/fix/linux/rhsa-2026-57590.md) | Aug 21, 2026 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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