{"id":"CVE-2026-34748","aliases":["EUVD-2026-18015","GHSA-mmxc-95ch-2j7c"],"status":"published","title":"@payloadcms/next has Stored XSS in Admin Panel","description":"Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.","severity":{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00291,"percentile":0.21789,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-04-01T19:48:10Z","modified":"2026-10-28T02:30:25Z","fixes":[{"ecosystem":"npm","package":"@payloadcms/next","fixed_in":["3.78.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@payloadcms/next","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.78.0"}]}]},{"source":"osv","ecosystem":"npm","package":"@payloadcms/next","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.78.0"}]}]}],"products":[{"vendor":"payloadcms","product":"payload"}],"references":[{"url":"https://github.com/payloadcms/payload/security/advisories/GHSA-mmxc-95ch-2j7c","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34748","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-mmxc-95ch-2j7c"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34748.json","tags":["advisory"]},{"url":"https://github.com/payloadcms/payload","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-34748","title":"@payloadcms/next has Stored XSS in Admin Panel","description":"Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.","status":"published","published":"2026-04-01T19:48:10.297Z","modified":"2026-04-02T16:24:38.88Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:13.962274Z"}],"euvd":[{"id":"EUVD-2026-18015","description":"Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.","status":"published","published":"2026-04-01T19:48:10Z","modified":"2026-04-02T16:24:38Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T19:25:22.606516Z"}],"ghsa":[{"id":"GHSA-mmxc-95ch-2j7c","title":"@payloadcms/next has Stored XSS in Admin Panel","description":"### Impact\n\nA stored Cross-site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser.\n\nConsumers are affected if ALL of these are true:\n\n- Payload version **\u003c v3.78.0**\n- At least one collection with versions enabled\n- An authenticated user has `create` or `update` access to that collection\n\n### Patches\n\nThis vulnerability has been patched in **v3.78.0**. Output encoding has been added to prevent user-supplied content from being interpreted as markup.\n\nUsers should upgrade to **v3.78.0** or later.\n\n### Workarounds\n\nIf consumers cannot upgrade immediately:\n\n- Restrict `create` and `update` access to versioned collections to trusted roles only.","status":"published","published":"2026-04-01T21:24:22Z","modified":"2026-04-06T16:47:02Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:39:47.945242Z"}],"nvd":[{"id":"CVE-2026-34748","description":"Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.","status":"published","published":"2026-04-01T20:16:27.04Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:12.73929Z"}],"osv":[{"id":"CVE-2026-34748","title":"@payloadcms/next has Stored XSS in Admin Panel","description":"Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/next, a stored Cross-Site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser. This issue has been patched in version 3.78.0.","status":"published","published":"2026-04-01T19:48:10.297Z","modified":"2026-10-28T02:30:25.687637117Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:02.247031Z"},{"id":"GHSA-mmxc-95ch-2j7c","title":"@payloadcms/next has Stored XSS in Admin Panel","description":"### Impact\n\nA stored Cross-site Scripting (XSS) vulnerability existed in the admin panel. An authenticated user with write access to a collection could save content that, when viewed by another user, would execute in their browser.\n\nConsumers are affected if ALL of these are true:\n\n- Payload version **\u003c v3.78.0**\n- At least one collection with versions enabled\n- An authenticated user has `create` or `update` access to that collection\n\n### Patches\n\nThis vulnerability has been patched in **v3.78.0**. Output encoding has been added to prevent user-supplied content from being interpreted as markup.\n\nUsers should upgrade to **v3.78.0** or later.\n\n### Workarounds\n\nIf consumers cannot upgrade immediately:\n\n- Restrict `create` and `update` access to versioned collections to trusted roles only.","status":"published","published":"2026-04-01T21:24:22Z","modified":"2026-04-06T17:05:23.541316Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:52.170928Z"}]}}