UBUNTU-CVE-2026-93749

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...

CVE-2026-93749

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...

CVE-2026-93749 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...

CVE-2026-93749

source-map-js (through 1.2.1 ) fails to validate the per-section offset line value in indexed source maps, allowing a remote, unauthenticated attacker to supply an extremely large offset line value. This triggers synchronous event loop blocking for extended periods, preventing the service from ha...

CVE-2026-93749: Improper Validation of Specified Quantity in Input

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...

CVE-2026-78594

Improper Handling of Highly Compressed Data CWE-409 in APM Server can lead to a persistent denial of service via Excessive Allocation CAPEC-130. An authenticated user with write access to source map content could store specially crafted, highly compressed content that exhausts the memory availabl...

CVE-2026-78594 Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of Service

Improper Handling of Highly Compressed Data CWE-409 in APM Server can lead to a persistent denial of service via Excessive Allocation CAPEC-130. An authenticated user with write access to source map content could store specially crafted, highly compressed content that exhausts the memory availabl...

CVE-2026-78594 Improper Handling of Highly Compressed Data in APM Server Leading to Persistent Denial of Service

Improper Handling of Highly Compressed Data CWE-409 in APM Server can lead to a persistent denial of service via Excessive Allocation CAPEC-130. An authenticated user with write access to source map content could store specially crafted, highly compressed content that exhausts the memory availabl...

postcss: PostCSS: Information disclosure via path traversal in source map auto-loading

A flaw was found in PostCSS. An attacker can exploit a path traversal vulnerability by providing specially crafted sourceMappingURL values in untrusted CSS files. This allows the attacker to disclose sensitive sourcesContent from arbitrary .map files accessible on the system, leading to informati...

postcss: PostCSS: Information disclosure via path traversal in source map auto-loading

A flaw was found in PostCSS. An attacker can exploit a path traversal vulnerability by providing specially crafted sourceMappingURL values in untrusted CSS files. This allows the attacker to disclose sensitive sourcesContent from arbitrary .map files accessible on the system, leading to informati...

postcss: PostCSS: Information disclosure via crafted sourceMappingURL

A flaw was found in PostCSS. A remote attacker can exploit this vulnerability by providing a specially crafted sourceMappingURL when a specific configuration the 'from' parameter is not set. This can cause the application to read and expose unintended source-map files, potentially revealing...

CVE-2026-69153

A flaw was found in PostCSS. A remote attacker can exploit this vulnerability by providing a specially crafted sourceMappingURL when a specific configuration the 'from' parameter is not set. This can cause the application to read and expose unintended source-map files, potentially revealing...

Directory Traversal

Overview postcss is a PostCSS is a tool for transforming styles with JS plugins. Affected versions of this package are vulnerable to Directory Traversal in the PreviousMap.loadFile method of lib/previous-map.js, which nests its traversal guard inside an if cssFile branch that is skipped when the...

EUVD-2026-52373

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...

CVE-2026-69153

CVE-2026-69153 (PostCSS) affects PostCSS prior to 8.5.19. If the option from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL, exposing the map’s sources and sourcesContent. The issue is f...

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 PreviousMap.loadFile to read an unintended source-map file by supplying an absolute or directory-traversal...

CVE-2026-69153 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...

CVE-2026-69153 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...

PT-2026-67450

Name of the Vulnerable Software and Affected Versions PostCSS versions prior to 8.5.19 Description PostCSS transforms CSS files into an Abstract Syntax Tree to allow analysis and modification. When the from option is unset, the PreviousMap.loadFile function fails to properly validate the...

Linux Distros Unpatched Vulnerability : CVE-2026-69153

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...