{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-13355 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-13355 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-13355 is a critical vulnerability in Meta Box Frontend Submission, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-13355 and fix it if it is affected.\n\nWhat it is: CVE-2026-13355 is a critical vulnerability in Meta Box Frontend Submission, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-13355 in the wild and no public exploit code.\n\nAffected product: Meta Box Frontend Submission. 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-2026-13355/ (Markdown: https://insights.sbomify.com/CVE-2026-13355/index.md)","id":"CVE-2026-13355","markdown":"https://insights.sbomify.com/CVE-2026-13355/index.md","name":"CVE-2026-13355","record":{"aliases":["GHSA-q84q-9hmp-p3qm"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can escalate privileges to Administrator by exploiting missing authorization checks in Meta Box AIO and related WordPress plugins.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"}],"description":"The Meta Box AIO plugin for WordPress is vulnerable to Privilege Escalation to Administrator in versions up to, and including, 3.11.0. This is due to a chained flaw: the populate_via_query_string() function in the mb-frontend-submission component unconditionally overrides the form's target object_id from the GET parameter 'rwmb_frontend_field_object_id' without any authorization check, and Form::process() lacks the user_can_edit() check present in render(), allowing unauthenticated attackers to overwrite the post_content of any page with an arbitrary shortcode via wp_update_post(); the mb-user-profile component then directly trusts the 'role' and 'auto_login' shortcode attributes in the injected [mb_user_profile_register] shortcode with no role validation. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator. The standalone plugins Meta Box Frontend Submission (in versions up to 4.5.6) and Meta Box User Profile (versions up to 3.11.0) are also affected.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-22","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-22T06:08:57Z","kind":"github_poc","ref":"https://github.com/murrez/CVE-2026-13355","stars":0,"title":"CVE-2026-13355 PoC — Meta Box AIO ≤3.11.0 unauthenticated admin privesc via MB Frontend Submission + User Profile shortcode chain. Python check/exploit, FOFA helper, mass scan with live flow."}],"tier":"poc_unverified"},"has_fix":null,"headline":"Privilege escalation in Meta Box Frontend Submission","id":"CVE-2026-13355","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"privilege_escalation","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Interrupted navigation could allow address bar origin spoofing in Firefox for iOS","id":"CVE-2026-13356"},"packages":[],"prev":{"headline":"Asset CleanUp: Page Speed Booster \u003c= 1.4.0.5 - Unauthenticated Stored Cross-Site Scripting via Comment Content","id":"CVE-2026-13354"},"products":["Meta Box Frontend Submission"],"published":"2026-09-22","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-22","vendors":["Meta Box"]},"summary":"Unauthenticated attackers can escalate privileges to Administrator by exploiting missing authorization checks in Meta Box AIO and related WordPress plugins.","url":"https://insights.sbomify.com/CVE-2026-13355/"}