{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59728", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-06T15:34:16.917Z", "datePublished": "2026-07-27T19:54:23.009Z", "dateUpdated": "2026-07-27T19:54:23.009Z"}, "containers": {"cna": {"title": "@astrojs/rss: XML Injection via Unescaped RSS Feed Fields", "problemTypes": [{"descriptions": [{"cweId": "CWE-91", "lang": "en", "description": "CWE-91: XML Injection (aka Blind XPath Injection)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/withastro/astro/security/advisories/GHSA-8j5q-mfj2-5q9q", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/withastro/astro/security/advisories/GHSA-8j5q-mfj2-5q9q"}, {"name": "https://github.com/withastro/astro/pull/17209", "tags": ["x_refsource_MISC"], "url": "https://github.com/withastro/astro/pull/17209"}, {"name": "https://github.com/withastro/astro/commit/fbcfa039dfe3d700b239f595a6c55ee35e45bd06", "tags": ["x_refsource_MISC"], "url": "https://github.com/withastro/astro/commit/fbcfa039dfe3d700b239f595a6c55ee35e45bd06"}, {"name": "https://github.com/withastro/astro/releases/tag/@astrojs/rss@4.0.19", "tags": ["x_refsource_MISC"], "url": "https://github.com/withastro/astro/releases/tag/@astrojs/rss@4.0.19"}], "affected": [{"vendor": "withastro", "product": "astro", "versions": [{"version": ">= 1.0.0, < 4.0.19", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-27T19:54:23.009Z"}, "descriptions": [{"lang": "en", "value": "Astro is a web framework for content-driven websites. In versions 1.0.0 through 4.0.18, the source.title and enclosure.type item fields in packages/astro-rss/src/index.ts are interpolated directly into XML template strings without XML-character escaping before being parsed by fast-xml-parser. Both fields are validated only as z.string(), placing no restriction on XML special characters. An attacker who controls these values can inject arbitrary XML into the generated RSS feed: a value containing \" can break out of an attribute (as with enclosure.type), and a value containing </source> can close an element early and inject additional nodes (as with source.title). This corrupts feed structure, injects false metadata (for example, a fake <link> pointing to a malicious URL), and can cause feed readers to misparse or display attacker-controlled content. In SSR mode (output: 'server'), the poisoned feed is served on every request to all subscribers. This issue has been fixed in version 4.0.19."}], "source": {"advisory": "GHSA-8j5q-mfj2-5q9q", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,4.0.19)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "astro", "source": "cna", "vendor": "withastro"}, "product": "astro", "vendor": "withastro"}], "created": "2026-07-28T03:15:07.797551+00:00", "updated": "2026-07-28T03:15:07.797569+00:00", "vendors": ["withastro", "withastro$PRODUCT$astro"]}