CVE-2026-45623 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...

CVE-2026-45623 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...

CVE-2026-45623

CVE-2026-45623 affects PostCSS ≤ 8.5.11. The bug lives in the PreviousMap logic used during CSS processing: the sourceMappingURL comment is parsed without any scheme, allowlist, or traversal checks, and the attacker-controlled path is dereferenced to read files readable by the Node process. This ...

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

Summary PostCSS's 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...

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

NPM: PostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS comments vulnerability discovered by ? in WordPress Npm postcss versions = 8.5.11...

GHSA-93Q6-WWJH-JC6H @asymmetric-effort/specifyjs: CSS expression sanitization is bypassable in renderToString

Finding Location: core/src/server/render-to-string.ts:307-311 CSS value sanitization stripped expression and urljavascript: using simple regex, but could be bypassed with CSS unicode escapes \65xpression, null bytes, or CSS comments exp//ression. Mitigating Factor: These CSS injection vectors onl...

EUVD-2023-2456

Malicious code in bioql PyPI...

CVE-2024-52595 HTML Cleaner allows crafted scripts in special contexts like svg or math to pass through

lxmlhtmlclean is a project for HTML cleaning functionalities copied from lxml.html.clean. Prior to version 0.4.0, the HTML Parser in lxml does not properly handle context-switching for special HTML tags such as , and . This behavior deviates from how web browsers parse and interpret such tags...

GHSA-7FH5-64P2-3V2J PostCSS line return parsing error

An issue was discovered in PostCSS before 8.4.31. It affects linters using PostCSS to parse external Cascading Style Sheets CSS. There may be \r discrepancies, as demonstrated by @font-face font:\r/; in a rule. This vulnerability affects linters using PostCSS to parse external untrusted CSS. An...

DEBIAN-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...

ESHOP network operators treasure Mall 1.0 GetWebshell-vulnerability warning-the black bar safety net

A day Wake up late, get up found on the ground a flyer. See is an online shop. So want to see with what program, find out where to see the html comments,css comments, and file name. Find is ESHOP network operators treasure Mall. google under exploits, found eshop exploits, test the next, not. But...

DEBIAN-CVE-2011-0047

Cross-site scripting XSS vulnerability in MediaWiki before 1.16.2 allows remote attackers to inject arbitrary web script or HTML via crafted Cascading Style Sheets CSS comments, aka "CSS injection vulnerability."...

CVE-2005-2608

SafeHTML before 1.3.5 does not properly filter script in UTF-7 and CSS comments, which allows remote attackers to conduct cross-site scripting XSS attacks in vulnerable applications that use SafeHTML...

CVE-2005-2608

SafeHTML before 1.3.5 does not properly filter script in UTF-7 and CSS comments, which allows remote attackers to conduct cross-site scripting XSS attacks in vulnerable applications that use SafeHTML...