{"id":"CVE-2026-102983","revision":null,"records":[{"revision":"a79eedcecbf9477a8ca1af0d168372ef","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-102983","aliases":[],"title":"Astro: Netlify Image CDN allowlist bypass enables SSRF","description":"Astro is a web framework for content-driven websites. From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Because Netlify evaluates these expressions with RegExp.test(), an allowed origin appearing only in a source URL's path or query can satisfy image.domains or image.remotePatterns while the URL's actual host remains attacker-controlled. An unauthenticated request to the public /.netlify/images endpoint can therefore cause the Image CDN to request attacker-selected URLs and may probe or reach internal services. Netlify egress protections may constrain reachable targets, and image transformation limits direct response exfiltration; no confidentiality or integrity impact has been demonstrated. This issue is fixed in version 8.2.4.","state":0,"publishedAt":"2026-09-30T14:32:03.861+00:00","modifiedAt":"2026-09-30T16:24:47.048+00:00","affected":[{"ecosystem":"Vendor product","name":"astro","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"withastro\",\n                    \"product\": \"astro\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 5.2.0, < 8.2.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"netlify","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"@astrojs\",\n                    \"product\": \"netlify\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 5.2.0, < 8.2.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-4233-jc72-56c5","https://github.com/withastro/astro/pull/17752","https://github.com/withastro/astro/commit/e362d4cf540b27730482455c8fc02efe57d16702","https://github.com/withastro/astro/releases/tag/@astrojs/netlify@8.2.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-102983","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-102983","identifiers":["CVE-2026-102983"]},"retained":false,"historicalAffected":[]},{"revision":"7f89d43621174607b574ff684f5066d8","observedAt":"2026-11-11T05:29:40.867+00:00","statement":{"source":"euvd","id":"EUVD-2026-89969","aliases":["CVE-2026-102983","GHSA-4233-jc72-56c5"],"title":"Astro is a web framework for content-driven websites. From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Becau…","description":"Astro is a web framework for content-driven websites. From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Because Netlify evaluates these expressions with RegExp.test(), an allowed origin appearing only in a source URL's path or query can satisfy image.domains or image.remotePatterns while the URL's actual host remains attacker-controlled. An unauthenticated request to the public /.netlify/images endpoint can therefore cause the Image CDN to request attacker-selected URLs and may probe or reach internal services. Netlify egress protections may constrain reachable targets, and image transformation limits direct response exfiltration; no confidentiality or integrity impact has been demonstrated. This issue is fixed in version 8.2.4.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":6.3,"severity":null}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-4233-jc72-56c5","https://github.com/withastro/astro/pull/17752","https://github.com/withastro/astro/commit/e362d4cf540b27730482455c8fc02efe57d16702","https://github.com/withastro/astro/releases/tag/@astrojs/netlify@8.2.4"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-89969","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 30, 2026, 2:32:03 PM","dateUpdated":"Sep 30, 2026, 4:24:47 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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From 5.2.0 until 8.2.4, the @astrojs/netlify adapter generates regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Because Netlify evaluates these expressions with RegExp.test(), an allowed origin appearing only in a source URL's path or query can satisfy image.domains or image.remotePatterns while the URL's actual host remains attacker-controlled. An unauthenticated request to the public /.netlify/images endpoint can therefore cause the Image CDN to request attacker-selected URLs and may probe or reach internal services. Netlify egress protections may constrain reachable targets, and image transformation limits direct response exfiltration; no confidentiality or integrity impact has been demonstrated. This issue is fixed in version 8.2.4.","state":0,"publishedAt":"2026-09-30T15:22:22.8+00:00","modifiedAt":"2026-09-30T19:38:27.293+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.3,"severity":"MEDIUM"}],"references":["https://github.com/withastro/astro/commit/e362d4cf540b27730482455c8fc02efe57d16702","https://github.com/withastro/astro/pull/17752","https://github.com/withastro/astro/releases/tag/@astrojs/netlify@8.2.4","https://github.com/withastro/astro/security/advisories/GHSA-4233-jc72-56c5"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102983","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-625","CWE-918"],"productCriteria":[],"sourceDates":{"published":"2026-09-30T15:22:22.800","lastModified":"2026-09-30T19:38:27.293"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-102983","identifiers":["CVE-2026-102983"]},"retained":false,"historicalAffected":[]},{"revision":"ab467882f7c742e382a4c815d25f26ef","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-4233-jc72-56c5","aliases":["CVE-2026-102983"],"title":"Astro: Netlify Image CDN allowlist bypass enables SSRF","description":"## Summary\n\nThe `@astrojs/netlify` adapter generated regular expressions for Netlify Image CDN remote-image allowlists without anchoring them to the beginning of the URL. Netlify evaluates these expressions with `RegExp.test()`, so an allowed image origin appearing anywhere in a URL, including its path or query string, could satisfy the allowlist.\n\nFor example, an application allowing `images.example.com` could accept a source URL such as:\n\n```text\nhttp://127.0.0.1:6379/?url=https://images.example.com/image.png\n```\n\nThe allowlist matched the approved origin in the query string, but Netlify parsed and fetched the URL whose actual host was `127.0.0.1`.\n\n## Impact\n\nAn unauthenticated attacker can bypass the configured `image.domains` or `image.remotePatterns` allowlist through the public `/.netlify/images` endpoint and cause Netlify Image CDN to make requests to attacker-selected URLs. This may allow probing or reaching internal services, depending on Netlify's network-level egress protections.\n\nThe Image CDN attempts to transform responses as images, which limits direct response exfiltration. No confidentiality or integrity impact has been demonstrated.\n\n## Affected versions\n\n`@astrojs/netlify` versions from 5.2.0 through 8.2.3.\n\n## Patches\n\nFixed in `@astrojs/netlify` 8.2.4. Generated remote-image allowlist expressions are now anchored to both the beginning and end of the source URL.\n\n## Workarounds\n\nUpgrade to `@astrojs/netlify` 8.2.4 or later. Before upgrading, disable Netlify Image CDN by setting `imageCDN: false` in the adapter configuration, or remove remote image allowlist entries.\n\n## Credits\n\nReported by @pacocartones.","state":0,"publishedAt":"2026-09-30T23:40:12+00:00","modifiedAt":"2026-09-30T23:45:04.012783+00:00","affected":[{"ecosystem":"npm","name":"@astrojs/netlify","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"5.2.0"},{"kind":"fixed","version":"8.2.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/withastro/astro/security/advisories/GHSA-4233-jc72-56c5","https://nvd.nist.gov/vuln/detail/CVE-2026-102983","https://github.com/withastro/astro/pull/17752","https://github.com/withastro/astro/commit/e362d4cf540b27730482455c8fc02efe57d16702","https://github.com/withastro/astro","https://github.com/withastro/astro/releases/tag/@astrojs/netlify@8.2.4"],"sourceUrl":"https://github.com/advisories/GHSA-4233-jc72-56c5","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-4233-jc72-56c5","identifiers":["GHSA-4233-jc72-56c5","CVE-2026-102983"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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