CVE catalog
CVE-2026-69153
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 PreviousMa
- Severity
- Medium · CVSS 6.3
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.45% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | node-postcss | sid | 8.5.31+~cs10.2.26-1 | fixed |
| Debian | node-postcss | forky | 8.5.31+~cs10.2.26-1 | fixed |
| Debian | node-postcss | trixie | 8.4.49+~cs9.2.32-1 | vulnerable |
| Debian | node-postcss | bookworm | 8.4.20+~cs8.0.23-1+deb12u1 | vulnerable |
| Npm | postcss | Not reported | 8.5.23 | fixed |
| Npm | postcss | Not reported | 8.5.23 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | node-postcss | source | sid | 8.5.23+~cs10.2.23-1 | not yet assigned | Not reported | Not reported |
| Debian | node-postcss | source | forky | 8.5.23+~cs10.2.23-1 | not yet assigned | Not reported | Not reported |
| Debian | node-postcss | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | node-postcss | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Npm | postcss | npm | Not reported | 8.5.23 | Not reported | GHSA-FXQJ-RQCC-2CMP | Not reported |
| Npm | postcss | npm | Not reported | 8.5.23 | Not reported | Not reported | Not reported |
Notes
[trixie] node-postcss: Minor issue [bookworm] node-postcss: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [node-postcss]Affected
Details (2)
8.4.20+~cs8.0.23-1+deb12u1· all · bookwormAffected
nvd · node-postcss · debian · bookworm; nvd · node-postcss · debian · 12
8.4.20+~cs8.0.23-1+deb12u1· all · bookwormAffected
nvd · node-postcss · debian · bookworm; nvd · node-postcss · debian · 12
[Debian 13 (Trixie)]
- [node-postcss]Affected
Details (2)
8.4.49+~cs9.2.32-1· all · trixieAffected
nvd · node-postcss · debian · 13
8.4.49+~cs9.2.32-1· all · trixieAffected
nvd · node-postcss · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11680-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-69153]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-69153]
- [https://osv.dev/vulnerability/GHSA-fxqj-rqcc-2cmp]
- [https://security-tracker.debian.org/tracker/CVE-2026-69153]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-69153.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]