{"answers":{"affected":"2 open source packages ship an affected version, including concrete5/concrete5. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30662 exists.","fix":"No fix has been published for CVE-2026-30662 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-30662 is a medium-severity denial of service vulnerability in Concretecms Concrete Cms, published on 24 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-30662 and fix it if it is affected.\n\nWhat it is: CVE-2026-30662 is a medium-severity denial of service vulnerability in Concretecms Concrete Cms, published on 24 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30662 exists.\n\nAffected packages and fixed versions:\n- concrete5/concrete5 (Packagist): affected all versions up to 9.4.7; no fix listed\n- concrete5/concrete5 (Packagist): affected all versions up to 9.4.7; no fix listed\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-2026-30662/ (Markdown: https://insights.sbomify.com/CVE-2026-30662/index.md)","id":"CVE-2026-30662","markdown":"https://insights.sbomify.com/CVE-2026-30662/index.md","name":"CVE-2026-30662","record":{"aliases":["GHSA-p68c-rmfh-j48h"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ConcreteCMS","requires_auth":"low_privilege","summary":"An authenticated attacker can cause a denial of service in ConcreteCMS by triggering an out-of-memory condition during bulk file downloads.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"concrete_cms","vendor":"concretecms"}],"cvss":{"score":6.5,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager component. The 'download' method in 'concrete/controllers/backend/file.php' improperly manages memory when creating zip archives. It uses 'ZipArchive::addFromString' combined with 'file_get_contents', which loads the entire content of every selected file into PHP memory. An authenticated attacker can exploit this by requesting a bulk download of large files, triggering an Out-Of-Memory (OOM) condition that causes the PHP-FPM process to terminate (SIGSEGV) and the web server to return a 500 error.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"ConcreteCMS is vulnerable to Denial of Service During Bulk Downloads","id":"CVE-2026-30662","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"concretecms:concrete_cms","products":["concretecms:concrete_cms"],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Missing authorization in Blog.Core","id":"CVE-2026-30689"},"packages":[{"ecosystem":"Packagist","fixed":[],"introduced":["0"],"last_affected":["9.4.7"],"package":"concrete5/concrete5","purl":null,"source":"GHSA-p68c-rmfh-j48h"},{"ecosystem":"Packagist","fixed":[],"introduced":["0"],"last_affected":["9.4.7"],"package":"concrete5/concrete5","purl":"pkg:composer/concrete5/concrete5","source":"GHSA-p68c-rmfh-j48h"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2026-30661"},"products":["n/a"],"published":"2026-03-24","related":[{"cvss_score":9.8,"headline":"Concrete CMS allows unauthorized access because directories can be created with insecure permissions","id":"CVE-2023-48648","kev_date_added":null,"published":"2023-11-17"},{"cvss_score":9.8,"headline":"Code injection in concrete CMS","id":"CVE-2022-21829","kev_date_added":null,"published":"2022-06-24"},{"cvss_score":9.8,"headline":"Server-Side Request Forgery vulnerability in concrete5","id":"CVE-2021-22958","kev_date_added":null,"published":"2021-10-07"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2021-40098","kev_date_added":null,"published":"2021-09-27"},{"cvss_score":9.4,"headline":"Concrete CMS Vulnerable to Relative Path Traversal","id":"CVE-2026-8134","kev_date_added":null,"published":"2026-05-21"},{"cvss_score":9.1,"headline":"Path traversal in Concrete CMS","id":"CVE-2022-30117","kev_date_added":null,"published":"2022-06-24"},{"cvss_score":9.1,"headline":"Deserialization in n/a","id":"CVE-2021-40102","kev_date_added":null,"published":"2021-09-24"}],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-24","vendors":["n/a"]},"summary":"An authenticated attacker can cause a denial of service in ConcreteCMS by triggering an out-of-memory condition during bulk file downloads.","url":"https://insights.sbomify.com/CVE-2026-30662/"}