What is CVE-2026-45623?
CVE-2026-45623 affects PostCSS versions 8.5.11 and prior. The vulnerability exists in the `PreviousMap` component, which parses the `/*# sourceMappingURL=PATH */` comment from CSS strings passed to `process()` and dereferences the PATH, potentially leading to information disclosure or SSRF attacks. Users should upgrade to the latest version immediately.
Azərbaycanca: CVE-2026-45623 PostCSS-in 8.5.11 və əvvəlki versiyalarına təsir edən boşluqdur. `process()` funksiyasına ötürülən CSS faylındakı `sourceMappingURL` şərhini işləyərkən `PreviousMap` komponenti xarici fayl yoluna (PATH) müraciət edir ki, bu da məlumat sızmasına və ya SSRF hücumlarına səbəb ola bilər. Dərhal ən son versiyaya yeniləmək tövsiyə olunur.
Related CVEs
link basis: same weakness class CWE-918
FAQ2
Which PostCSS versions are affected by CVE-2026-45623?
CVE-2026-45623 affects PostCSS versions 8.5.11 and prior.
How can CVE-2026-45623 be exploited?
This vulnerability can be exploited through the `PreviousMap` component by dereferencing the external file path in the `sourceMappingURL` comment, potentially leading to information disclosure or SSRF attacks.
See also6
This explainer is AI-written from source data — skopnix's own reporting on this CVE; CVSS scores, vendors and versions are never invented. See NVD for the official record.