{"answers":{"affected":"2 open source packages ship an affected version, including @payloadcms/next. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-34748 in the wild and no public exploit code.","fix":"Upgrade @payloadcms/next to 3.78.0 or later.","what":"CVE-2026-34748 is a high-severity cross-site scripting vulnerability in payloadcms payload, published on 1 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-34748 and fix it if it is affected.\n\nWhat it is: CVE-2026-34748 is a high-severity cross-site scripting vulnerability in payloadcms payload, published on 1 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-34748 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @payloadcms/next (npm): affected all versions; fixed in 3.78.0\n- @payloadcms/next (npm): affected all versions; fixed in 3.78.0\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-2026-34748/ (Markdown: https://insights.sbomify.com/CVE-2026-34748/index.md)","id":"CVE-2026-34748","markdown":"https://insights.sbomify.com/CVE-2026-34748/index.md","name":"CVE-2026-34748","record":{"aliases":["GHSA-mmxc-95ch-2j7c"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Headless CMS","requires_auth":"low_privilege","summary":"An authenticated user with write access can inject malicious scripts into the admin panel, leading to code execution in other users' browsers.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"payload","vendor":"payloadcms"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"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.","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":"@payloadcms/next has Stored XSS in Admin Panel","id":"CVE-2026-34748","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Payload has a CSRF Protection Bypass in Authentication Flow","id":"CVE-2026-34749"},"packages":[{"ecosystem":"npm","fixed":["3.78.0"],"introduced":["0"],"last_affected":[],"package":"@payloadcms/next","purl":null,"source":"GHSA-mmxc-95ch-2j7c"},{"ecosystem":"npm","fixed":["3.78.0"],"introduced":["0"],"last_affected":[],"package":"@payloadcms/next","purl":"pkg:npm/%40payloadcms/next","source":"GHSA-mmxc-95ch-2j7c"}],"prev":{"headline":"Payload has an SQL Injection via Query Handling","id":"CVE-2026-34747"},"products":["payload"],"published":"2026-04-01","related":[{"cvss_score":10,"headline":"Payload: RCE in Payload Form Builder","id":"CVE-2026-105857","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Payload: Unauthorized update to collection documents","id":"CVE-2026-105859","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.8,"headline":"Payload has an SQL Injection in JSON/RichText Queries on PostgreSQL/SQLite Adapters","id":"CVE-2026-25544","kev_date_added":null,"published":"2026-02-06"},{"cvss_score":9.8,"headline":"Unrestricted Upload of File with Dangerous Type in Payload","id":"CVE-2022-27952","kev_date_added":null,"published":"2022-04-12"},{"cvss_score":9.3,"headline":"Payload: Field access control bypass on auth collections","id":"CVE-2026-105851","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.2,"headline":"Payload authentication token field handling issue","id":"CVE-2026-105863","kev_date_added":null,"published":"2026-10-06"},{"cvss_score":9.1,"headline":"Payload has Unvalidated Input in Password Recovery Endpoints","id":"CVE-2026-34751","kev_date_added":null,"published":"2026-04-01"}],"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":"total"},"state":"PUBLISHED","updated":"2026-04-02","vendors":["payloadcms"]},"summary":"An authenticated user with write access can inject malicious scripts into the admin panel, leading to code execution in other users' browsers.","url":"https://insights.sbomify.com/CVE-2026-34748/"}