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Vulnérabilités de node-postcss

Vulnérabilité publiée pour node-postcss au cours des 30 derniers jours : 0. Dans le catalogue KEV : 0.

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Vulnérabilités : 6

  1. CVE-2026-93749

    Élevée · CVSS 8.7EPSS 0,46%Aucun correctif publié

    source-map-js through 1.2.1 Event Loop Denial of Service

    source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the service from handling other requests.

    Publication Mise à jour
  2. CVE-2026-69153

    Moyenne · CVSS 6.3EPSS 0,45%Aucun correctif publié

    PostCSS: incomplete fix of CVE-2026-45623 — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset

    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.

    Publication Mise à jour
  3. CVE-2026-45623

    Élevée · CVSS 7.5EPSS 0,61%Aucun correctif publié

    PostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS comments

    PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. In versions 8.5.11 and prior, the PreviousMap parses the /*# sourceMappingURL=PATH */ comment from any CSS string passed to process() and dereferences PATH against the local filesystem with no scheme, allowlist, or traversal check. An attacker who controls the CSS input can cause the host process to read any file readable by Node and leak the first ~10 bytes of its content through the resulting JSON.parse SyntaxError message. The bug also yields a precise file-existence oracle and a controllable-read primitive t

    Publication Mise à jour
  4. CVE-2026-41305

    Moyenne · CVSS 6.1EPSS 0,21%Aucun correctif publié

    PostCSS has XSS via Unescaped </style> in its CSS Stringify Output

    PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape `</style>` sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML `<style>` tags, `</style>` in CSS values breaks out of the style context, enabling XSS. Version 8.5.10 fixes the issue.

    Publication Mise à jour
  5. CVE-2023-44270

    Moyenne · CVSS 5.3EPSS 0,97%Aucun correctif publié

    CVE-2023-44270

    An issue was discovered in PostCSS before 8.4.31. The vulnerability affects linters using PostCSS to parse external untrusted CSS. An attacker can prepare CSS in such a way that it will contains parts parsed by PostCSS as a CSS comment. After processing by PostCSS, it will be included in the PostCSS output in CSS nodes (rules, properties) despite being included in a comment.

    Publication Mise à jour

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