{"answers":{"affected":"2 open source packages ship an affected version, including astro. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-54299 in the wild and no public exploit code.","fix":"Upgrade astro to 6.4.6 or later.","what":"CVE-2026-54299 is a high-severity server-side request forgery vulnerability in withastro astro, published on 22 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-54299 and fix it if it is affected.\n\nWhat it is: CVE-2026-54299 is a high-severity server-side request forgery vulnerability in withastro astro, published on 22 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-54299 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- astro (npm): affected all versions; fixed in 6.4.6\n- astro (npm): affected all versions; fixed in 6.4.6\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-54299/ (Markdown: https://insights.sbomify.com/CVE-2026-54299/index.md)","id":"CVE-2026-54299","markdown":"https://insights.sbomify.com/CVE-2026-54299/index.md","name":"CVE-2026-54299","record":{"aliases":["GHSA-2pvr-wf23-7pc7"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Astro web framework","requires_auth":"none","summary":"Attackers can exploit unvalidated Host headers in Astro SSR apps with prerendered error pages to perform Server-Side Request Forgery and read arbitrary responses.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"astro","vendor":"astro"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"},{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Astro is a web framework. Prior to 6.4.6, Astro SSR apps with prerendered error pages (/404 or /500 using export const prerender = true) fetch those pages over HTTP at runtime when an error occurs. The URL for this fetch is derived from request.url, which in turn gets its origin from the incoming Host header. When the Host header is not validated against allowedDomains, an attacker can point the fetch at an arbitrary host and read the response. This vulnerability is fixed in 6.4.6.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Astro: Host header SSRF in prerendered error page fetch","id":"CVE-2026-54299","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"@astrojs/netlify broadens Astro image.remotePatterns in Netlify Image CDN config","id":"CVE-2026-54300"},"packages":[{"ecosystem":"npm","fixed":["6.4.6"],"introduced":["0"],"last_affected":[],"package":"astro","purl":null,"source":"GHSA-2pvr-wf23-7pc7"},{"ecosystem":"npm","fixed":["6.4.6"],"introduced":["0"],"last_affected":[],"package":"astro","purl":"pkg:npm/astro","source":"GHSA-2pvr-wf23-7pc7"}],"prev":{"headline":"Astro: XSS via Unescaped Attribute Names in Spread Props","id":"CVE-2026-54298"},"products":["astro"],"published":"2026-06-22","related":[{"cvss_score":7.8,"headline":"Server source code is exposed to the public if sourcemaps are enabled","id":"CVE-2024-56159","kev_date_added":null,"published":"2024-12-19"},{"cvss_score":7.2,"headline":"astro allows bypass of image proxy domain validation leading to SSRF and potential XSS","id":"CVE-2025-59837","kev_date_added":null,"published":"2025-10-28"},{"cvss_score":7.1,"headline":"Astro: Reflected XSS via unescaped slot name","id":"CVE-2026-50146","kev_date_added":null,"published":"2026-06-22"},{"cvss_score":7.1,"headline":"Astro is vulnerable to Reflected XSS via the server islands feature","id":"CVE-2025-64764","kev_date_added":null,"published":"2025-11-19"},{"cvss_score":6.9,"headline":"Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values","id":"CVE-2025-64765","kev_date_added":null,"published":"2025-11-19"},{"cvss_score":6.9,"headline":"Unauthorized third-party images in Astro’s _image endpoint","id":"CVE-2025-55303","kev_date_added":null,"published":"2025-08-19"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-23","vendors":["withastro"]},"summary":"Attackers can exploit unvalidated Host headers in Astro SSR apps with prerendered error pages to perform Server-Side Request Forgery and read arbitrary responses.","url":"https://insights.sbomify.com/CVE-2026-54299/"}