{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-86730 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-86730 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-86730 is a high-severity code injection vulnerability in craftcms cms, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-86730 and fix it if it is affected.\n\nWhat it is: CVE-2026-86730 is a high-severity code injection vulnerability in craftcms cms, published on 8 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-86730 in the wild and no public exploit code.\n\nAffected product: craftcms cms. 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-2026-86730/ (Markdown: https://insights.sbomify.com/CVE-2026-86730/index.md)","id":"CVE-2026-86730","markdown":"https://insights.sbomify.com/CVE-2026-86730/index.md","name":"CVE-2026-86730","record":{"aliases":["GHSA-j4wp-xfvq-c8f7","GHSA-qj4v-m29p-fj4m"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Craft CMS","requires_auth":"low_privilege","summary":"Authenticated Craft CMS users can inject Yii2 behaviors via field layouts to achieve remote code execution.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authenticated control-panel users to inject Yii2 behavior attachments and event handlers. Attackers can post field-layout tab elements as JSON strings to bypass cleanse validation, then trigger arbitrary object instantiation and code execution through Craft::createObject().","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Craft CMS 5.0.0-RC1 before 5.10.12 Behavior Injection RCE","id":"CVE-2026-86730","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Craft CMS 5.0.0-RC1 before 5.10.12 Permission Escalation via UsersController","id":"CVE-2026-86731"},"packages":[],"prev":{"headline":"WWBN AVideo Unrestricted Authentication Attempts via get_api_preauthorize","id":"CVE-2026-86729"},"products":["cms"],"published":"2026-09-08","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":"total"},"state":"PUBLISHED","updated":"2026-09-08","vendors":["craftcms"]},"summary":"Authenticated Craft CMS users can inject Yii2 behaviors via field layouts to achieve remote code execution.","url":"https://insights.sbomify.com/CVE-2026-86730/"}