{"id":"CVE-2026-114125","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-114125","generatedAt":"2026-10-28T01:12:12.783Z","title":"From 8.0.0 until 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6, a malicious website can interact with the preview of a running Storybook development server.","description":"Storybook is a frontend workshop for building user interface components and pages in isolation. From 8.0.0 until 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6, a malicious website can interact with the preview of a running Storybook development server. Insufficient iframe embedding and message-origin restrictions can allow attacker-controlled events to reach the running preview. A developer must visit the malicious website and interact with the injected interface. The attack can cause unauthorized changes to story files and, if a changed file is later executed by a local runtime, arbitrary code execution with the developer's privileges. This issue is fixed in 8.6.19, 9.1.21, 10.6.2, and 11.0.0-alpha.6.","published":"2026-10-21T18:17:25.000Z","lastModified":"2026-10-22T17:21:57.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.6,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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/M"},"cwe":["CWE-94","CWE-346","CWE-1021"],"affected":[],"epss":{"score":0.00385,"percentile":0.32295,"date":"2026-10-26","history":[{"date":"2026-10-22","score":0.00375,"percentile":0.30254}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-21T18:17:25.000Z","detail":{"score":"8.6","severity":"HIGH","publishedAt":"2026-10-21T18:17:24.957Z"},"summary":"New CVE, high severity (CVSS 8.6)."}],"references":[{"url":"https://github.com/storybookjs/storybook/commit/243c06bf8f1e2f09446c44868ea100261e1374da","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/commit/3be03ec6f11f4616471cebc3fc65c13e1bf8c178","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/commit/97513d999910d071c2b36830495dab63e17d9fe0","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/commit/d9b09e332510a88689c71ecc081bbbc2d072476e","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/commit/df3fed468c9b4830605f00068c4bc6b7e1e215ed","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/pull/36726","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/releases/tag/v10.6.2","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/releases/tag/v11.0.0-alpha.6","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/releases/tag/v8.6.19","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/releases/tag/v9.1.21","source":"security-advisories@github.com"},{"url":"https://github.com/storybookjs/storybook/security/advisories/GHSA-f2ph-cmg5-wxc8","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-114125","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}