{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-3551 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-3551 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-3551 is a medium-severity cross-site scripting vulnerability in rafasashi Custom New User Notification, published on 16 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-3551 and fix it if it is affected.\n\nWhat it is: CVE-2026-3551 is a medium-severity cross-site scripting vulnerability in rafasashi Custom New User Notification, published on 16 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-3551 in the wild and no public exploit code.\n\nAffected product: rafasashi Custom New User Notification. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-3551/ (Markdown: https://insights.sbomify.com/CVE-2026-3551/index.md)","id":"CVE-2026-3551","markdown":"https://insights.sbomify.com/CVE-2026-3551/index.md","name":"CVE-2026-3551","record":{"aliases":["GHSA-4xx2-h7jh-g7ph"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"high_privilege","summary":"Administrators can inject scripts via plugin settings, potentially targeting super admins in multi-site installations.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":4.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"The Custom New User Notification plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's admin settings in all versions up to, and including, 1.2.0. This is due to insufficient input sanitization and output escaping on multiple settings fields including 'User Mail Subject', 'User From Name', 'User From Email', 'Admin Mail Subject', 'Admin From Name', and 'Admin From Email'. The settings are registered via register_setting() without sanitize callbacks, and the values retrieved via get_option() are echoed directly into HTML input value attributes without esc_attr(). This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in the plugin settings page that will execute whenever a user accesses that page. This could be used in multi-site installations where administrators of subsites could target super administrators.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Cross-site scripting in Custom New User Notification","id":"CVE-2026-3551","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":17,"next":{"headline":"Missing authorization in SurfLink – Link Manager \u0026 Backup Restore","id":"CVE-2026-3552"},"packages":[],"prev":{"headline":"RockPress \u003c= 1.0.17 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Modification via AJAX Actions","id":"CVE-2026-3550"},"products":["Custom New User Notification"],"published":"2026-04-16","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-04-16","vendors":["rafasashi"]},"summary":"Administrators can inject scripts via plugin settings, potentially targeting super admins in multi-site installations.","url":"https://insights.sbomify.com/CVE-2026-3551/"}