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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| postcss | postcss | < 8.5.19 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-postcss | 8.5.23+~cs10.2.23-1 | — |
| Debian 13 | node-postcss | No fix yet | — |
| Debian 12 | node-postcss | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | node-postcss | No fix yet | — |
| Ubuntu 26.04 LTS | node-postcss | No fix yet | — |
| Ubuntu 24.04 LTS | node-postcss | No fix yet | — |
| Ubuntu 22.04 LTS | node-postcss | No fix yet | — |
| Ubuntu 20.04 LTS | node-postcss | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | rh-podman-desktop | 1.1.2-1.el10_2 | RHSA-2026:57590 |
Show 5 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | grafana12.4 | 12.4.6-0.4.hum1 | RHSA-2026:50290 |
| Red Hat Hardened Images 1 | grafana13.1 | 13.1.1-0.5.1.hum1 | RHSA-2026:50826, RHSA-2026:50079 |
| Red Hat Hardened Images 1 | prometheus3.13 | 3.13.2-0.2.hum1 | RHSA-2026:50287 |
| Red Hat Hardened Images 1 | prometheus3.5 | 3.5.5-0.7.hum1 | RHSA-2026:50070 |
| Red Hat Edge Manager 1 | flightctl +2 | 1.1.4-1.el9em | RHSA-2026:68334 |
| Red Hat Ansible Automation Platform Inside 2 | receptor | 1.6.8-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform Developer 2 | automation-controller +1 | 4.7.17-1.el9ap | RHSA-2026:71113 |
| Red Hat Ansible Automation Platform Developer 2 | python-sqlparse +1 | 0.6.0-1.el10ap | RHSA-2026:71113 |
| Red Hat Ansible Automation Platform Developer 2 | python3.12-sqlparse | 0.6.0-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform Developer 2 | receptor | 1.6.8-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | automation-controller +3 | 4.7.17-1.el9ap | RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | automation-controller-venv-tower | 4.6.33-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | automation-gateway-proxy-server | 2.5.10-8.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | automation-gateway-server | 2.5.20260923-1.el8ap | RHSA-2026:71114 |
| Red Hat Ansible Automation Platform 2 | automation-platform-ui | 2.6.14-1.el9ap | RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | python-sqlparse +1 | 0.6.0-1.el10ap | RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | python3.12-gitpython | 3.1.60-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | python3.12-sqlparse | 0.6.0-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
| Red Hat Ansible Automation Platform 2 | receptor | 1.6.8-1.el8ap | RHSA-2026:71114, RHSA-2026:71113 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | agama-web-ui | 24+0.a836cced5-52.1 | openSUSE-SU-2026:11680-1 |
| openSUSE Tumbleweed | velociraptor | 0.76.7.0.git145.b60ef1146-1.1 | openSUSE-SU-2026:12070-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | jupyter-base-notebook | 7.6.3-r2 | — |
| Wolfi rolling | kubeflow-pipelines-apiserver +1 | 2.17.2-r4 | — |
| Wolfi rolling | kubeflow-pipelines-frontend | 2.17.0-r3 | — |
| Wolfi rolling | langfuse-3-compat | 3.225.7-r6 | — |
| Wolfi rolling | langfuse-3-worker | 3.225.1-r2 | — |
| Wolfi rolling | nextcloud-server-33 | 33.0.8-r0 | — |
| Wolfi rolling | renovate | 44.11.3-r0 | — |
| Wolfi rolling | saf | 1.6.0-r4 | — |
| Wolfi rolling | vitess-23 | 23.0.5-r7 | — |
| Wolfi rolling | vitess-24 | 24.0.2-r10 | — |
| Wolfi rolling | vitess-24-compat | 24.0.3-r7 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | postcss | < 8.5.23 | 8.5.23 | GHSA-fxqj-rqcc-2cmp |
Advisories 11
- RHSA-2026:71114 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:71113 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:68334 Red Hat Security Advisory: Red Hat Edge Manager Version 1.1.4 Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:57590 Red Hat Security Advisory: rh-podman-desktop security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:50826 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:50287 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:50290 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:50070 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:50079 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- openSUSE-SU-2026:12070-1 velociraptor-0.76.7.0.git145.b60ef1146-1.1 on GA media SUSE / openSUSE Security Updates · Oct 7, 2026
- openSUSE-SU-2026:11680-1 agama-web-ui-24+0.a836cced5-52.1 on GA media SUSE / openSUSE Security Updates · Sep 5, 2026