{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53727", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-10T16:43:31.242Z", "datePublished": "2026-07-17T20:30:37.291Z", "dateUpdated": "2026-07-17T20:30:37.291Z"}, "containers": {"cna": {"title": "css_parser: SSRF and Local File Disclosure in `CssParser::Parser#read_remote_file`", "problemTypes": [{"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.9, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/premailer/css_parser/security/advisories/GHSA-9pmc-p236-855h", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/premailer/css_parser/security/advisories/GHSA-9pmc-p236-855h"}, {"name": "https://github.com/premailer/css_parser/commit/7d2ddf0189cd54b54f378f59daefa10cb036e476", "tags": ["x_refsource_MISC"], "url": "https://github.com/premailer/css_parser/commit/7d2ddf0189cd54b54f378f59daefa10cb036e476"}, {"name": "https://github.com/premailer/css_parser/commit/e0a151458b2a801ae265ba420862ef8b1127b3ae", "tags": ["x_refsource_MISC"], "url": "https://github.com/premailer/css_parser/commit/e0a151458b2a801ae265ba420862ef8b1127b3ae"}, {"name": "https://github.com/premailer/css_parser/releases/tag/v3.0.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/premailer/css_parser/releases/tag/v3.0.0"}], "affected": [{"vendor": "premailer", "product": "css_parser", "versions": [{"version": "< 3.0.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-17T20:30:37.291Z"}, "descriptions": [{"lang": "en", "value": "css_parser is a Ruby CSS parser. From 2.2.0 until 3.0.0, CssParser::Parser#read_remote_file in lib/css_parser/parser.rb, and therefore load_uri! and the @import-following branch of add_block!, issued HTTP and HTTPS requests against any host, port, and URI without a scheme allowlist, host or IP filtering, or protection against link-local, loopback, or RFC-1918 addresses. Location: redirects were followed recursively back into the same function, which also serviced file:// URIs, so a single attacker-controlled HTTP redirect could upgrade the bug from SSRF to arbitrary local file disclosure. Any consumer of css_parser that hands it attacker-influenced CSS together with a base_uri: option is exposed. This issue is fixed in version 3.0.0."}], "source": {"advisory": "GHSA-9pmc-p236-855h", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.0.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "css_parser", "source": "cna", "vendor": "premailer"}, "product": "css_parser", "vendor": "premailer"}], "created": "2026-07-17T21:30:17.284856+00:00", "updated": "2026-07-17T21:30:17.284893+00:00", "vendors": ["premailer", "premailer$PRODUCT$css_parser"]}