{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6279 exists.","fix":"No fix has been published for CVE-2026-6279 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-6279 is a critical code injection vulnerability in themefusion Avada (Fusion) Builder, published on 21 May 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-2026-6279 and fix it if it is affected.\n\nWhat it is: CVE-2026-6279 is a critical code injection vulnerability in themefusion Avada (Fusion) Builder, published on 21 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6279 exists.\n\nAffected product: themefusion Avada (Fusion) Builder. 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-2026-6279/ (Markdown: https://insights.sbomify.com/CVE-2026-6279/index.md)","id":"CVE-2026-6279","markdown":"https://insights.sbomify.com/CVE-2026-6279/index.md","name":"CVE-2026-6279","record":{"aliases":["GHSA-f53p-382v-8pj7"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code on WordPress sites using the Avada Builder plugin by injecting PHP functions via a shortcode attribute.","user_interaction":"not_required","vuln_class":"code_injection"},"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-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"The Avada Builder (fusion-builder) plugin for WordPress is vulnerable to Unauthenticated Remote Code Execution via PHP Function Injection in versions up to and including 3.15.2. This is due to the `wp_conditional_tags` case in `Fusion_Builder_Conditional_Render_Helper::get_value()` passing attacker-controlled values from a base64-decoded JSON blob directly to `call_user_func()` without any allowlist validation. This is exploitable by unauthenticated attackers through the `fusion_get_widget_markup` AJAX endpoint, which is registered for non-privileged (unauthenticated) users via `wp_ajax_nopriv_fusion_get_widget_markup`. The endpoint is protected only by a nonce (`fusion_load_nonce`), but this nonce is generated for user ID 0 and is deterministically exposed in the JavaScript output of any public-facing page containing a Post Cards (`[fusion_post_cards]`) or Table of Contents (`[fusion_table_of_contents]`) element. This makes it possible for unauthenticated attackers to execute arbitrary code on affected sites.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-05-23","github_poc":5,"max_poc_stars":3,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-05-23T09:33:32Z","kind":"github_poc","ref":"https://github.com/zycoder0day/CVE-2026-6279","stars":3,"title":"CVE-2026-6279 — Avada Builder \u003c= 3.15.2 Unauthenticated RCE via call_user_func()"},{"date":"2026-06-13T11:27:50Z","kind":"github_poc","ref":"https://github.com/87achrafg-stack/CVE-2026-6279.py","stars":1,"title":"CVE-2026-6279"},{"date":"2026-05-23T06:36:55Z","kind":"github_poc","ref":"https://github.com/xxconi/CVE-2026-6279","stars":0,"title":"CVE-2026-6279: Avada (Fusion) Builder \u003c= 3.15.2 – Unauthenticated Remote Code Execution via PHP Function Injection via 'render_logics' Shortcode Attribute via Widget AJAX Handler (fusion-builder)"},{"date":"2026-06-13T11:31:46Z","kind":"github_poc","ref":"https://github.com/87achrafg-stack/CVE-2026-6279","stars":0,"title":null},{"date":"2026-09-06T10:03:25Z","kind":"github_poc","ref":"https://github.com/katranSefa/CVE-2026-6279","stars":0,"title":null},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-6279.yaml","stars":null,"title":"Avada Builder (fusion-builder) \u003c= 3.15.2 - Unauthenticated RCE via PHP Function Injection"}],"tier":"weaponised"},"has_fix":null,"headline":"Code injection in Avada (Fusion) Builder","id":"CVE-2026-6279","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":12,"next":{"headline":"Improper Access Control in Nomysoft Informatics' Nomysem","id":"CVE-2026-6280"},"packages":[],"prev":{"headline":"This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.","id":"CVE-2026-6278"},"products":["Avada (Fusion) Builder"],"published":"2026-05-21","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":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-21","vendors":["themefusion"]},"summary":"Unauthenticated attackers can execute arbitrary code on WordPress sites using the Avada Builder plugin by injecting PHP functions via a shortcode attribute.","url":"https://insights.sbomify.com/CVE-2026-6279/"}