{"affected":[{"product":"kit","source":"CNA: GitHub_M","vendor":"sveltejs","versions":[{"status":"affected","version":">= 4.7.0, < 7.2.10"},{"status":"affected","version":">= 8.0.0-next.0, < 8.0.2"}]}],"cveId":"CVE-2026-128122","cwes":["CWE-79","CWE-93","CWE-116"],"description":"SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From version 4.7.0 until versions 7.2.10 and 8.0.2, @sveltejs/adapter-cloudflare allowed an attacker-influenced link crawled during prerendering to place whitespace, control characters, wildcards, or placeholders into a prerendered redirect path. The adapter wrote those paths into the Cloudflare _redirects output without output-context validation, allowing a path to create unintended routing rules that could redirect or expose requests beyond the intended prerendered route. This issue is fixed in 7.2.10 and 8.0.2.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.9,"severity":"medium","source":"CNA: GitHub_M","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}],"modifiedAt":1794599248720,"publishedAt":1794599248720,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sveltejs/kit/security/advisories/GHSA-5wg4-q3ww-283h"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/sveltejs/kit/pull/17620"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/sveltejs/kit/commit/0a2e58cbccdd46cac20aa5af4e2edf17e0da11dd"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/sveltejs/kit/commit/679e0d84ea9951bb4f1e458a599066b5a451b08a"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-cloudflare@7.2.10"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/adapter-cloudflare@8.0.2"}],"remediation":[],"revision":"49113b8f921c5a78adc37c6a4b20898264e8942659cdaa74e04eaa3151283fb3","sources":[{"modifiedAt":1794599248720,"name":"CNA: GitHub_M","retrievedAt":1794600604082,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128122"}],"ssvc":null,"status":"published","title":"SvelteKit: Prerendered redirect paths can inject arbitrary rules into the `_redirects` file generated by `@sveltejs/adapter-cloudflare`","updatedAt":1794600604082}