{"answers":{"affected":"4 open source packages ship an affected version, including october/cms. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21264 in the wild and no public exploit code.","fix":"Upgrade october/cms to a fixed version for your release line: 1.0.472 or 1.1.2.","what":"CVE-2021-21264 is a medium-severity code injection vulnerability in Octobercms October, published on 3 May 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-21264 and fix it if it is affected.\n\nWhat it is: CVE-2021-21264 is a medium-severity code injection vulnerability in Octobercms October, published on 3 May 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2021-21264 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- october/cms (Packagist): affected from 1.0.471; fixed in 1.0.472\n- october/cms (Packagist): affected from 1.0.471; fixed in 1.0.472\n- october/cms (Packagist): affected from 1.1.1; fixed in 1.1.2\n- october/cms (Packagist): affected from 1.1.1; fixed in 1.1.2\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-2021-21264/ (Markdown: https://insights.sbomify.com/CVE-2021-21264/index.md)","id":"CVE-2021-21264","markdown":"https://insights.sbomify.com/CVE-2021-21264/index.md","name":"CVE-2021-21264","record":{"aliases":["GHSA-fcr8-6q7r-m4wg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"October CMS","requires_auth":"high_privilege","summary":"Authenticated users can bypass Twig sandbox restrictions to execute arbitrary PHP code if safe mode is enabled.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"october","vendor":"octobercms"}],"cvss":{"score":5.2,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"October is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A bypass of CVE-2020-26231 (fixed in 1.0.470/471 and 1.1.1) was discovered that has the same impact as CVE-2020-26231 \u0026 CVE-2020-15247. An authenticated backend user with the `cms.manage_pages`, `cms.manage_layouts`, or `cms.manage_partials` permissions who would **normally** not be permitted to provide PHP code to be executed by the CMS due to `cms.enableSafeMode` being enabled is able to write specific Twig code to escape the Twig sandbox and execute arbitrary PHP. This is not a problem for anyone that trusts their users with those permissions to normally write \u0026 manage PHP within the CMS by not having `cms.enableSafeMode` enabled, but would be a problem for anyone relying on `cms.enableSafeMode` to ensure that users with those permissions in production do not have access to write \u0026 execute arbitrary PHP. Issue has been patched in Build 472 (v1.0.472) and v1.1.2. As a workaround, apply https://github.com/octobercms/october/commit/f63519ff1e8d375df30deba63156a2fc97aa9ee7 to your installation manually if unable to upgrade to Build 472 or v1.1.2.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Bypass of fix for CVE-2020-26231, Twig sandbox escape","id":"CVE-2021-21264","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"octobercms:october","products":["octobercms:october"],"type":"code_injection","year":"2021"},"n_packages":4,"n_references":1,"next":{"headline":"October CMS vulnerable to Potential Host Header Poisoning on misconfigured servers","id":"CVE-2021-21265"},"packages":[{"ecosystem":"Packagist","fixed":["1.0.472"],"introduced":["1.0.471"],"last_affected":[],"package":"october/cms","purl":null,"source":"GHSA-fcr8-6q7r-m4wg"},{"ecosystem":"Packagist","fixed":["1.0.472"],"introduced":["1.0.471"],"last_affected":[],"package":"october/cms","purl":"pkg:composer/october/cms","source":"GHSA-fcr8-6q7r-m4wg"},{"ecosystem":"Packagist","fixed":["1.1.2"],"introduced":["1.1.1"],"last_affected":[],"package":"october/cms","purl":null,"source":"GHSA-fcr8-6q7r-m4wg"},{"ecosystem":"Packagist","fixed":["1.1.2"],"introduced":["1.1.1"],"last_affected":[],"package":"october/cms","purl":"pkg:composer/october/cms","source":"GHSA-fcr8-6q7r-m4wg"}],"prev":{"headline":"Query Binding Exploitation in Laravel","id":"CVE-2021-21263"},"products":["october"],"published":"2021-05-03","related":[{"cvss_score":8.2,"headline":"October CMS Improper Authentication","id":"CVE-2021-32648","kev_date_added":"2022-01-18","published":"2021-08-26"},{"cvss_score":9.8,"headline":"October CMS Session ID not invalidated after logout","id":"CVE-2021-3311","kev_date_added":null,"published":"2021-02-05"},{"cvss_score":9.8,"headline":"October CMS File Upload Vulnerability","id":"CVE-2017-1000194","kev_date_added":null,"published":"2017-11-17"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2017-1000196","kev_date_added":null,"published":"2017-11-17"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2017-1000197","kev_date_added":null,"published":"2017-11-17"},{"cvss_score":9.1,"headline":"October CMS safe mode bypass using Twig sandbox escape","id":"CVE-2023-44382","kev_date_added":null,"published":"2023-12-01"},{"cvss_score":8.8,"headline":"Authenticated file write leads to remote code execution in october/system","id":"CVE-2021-32649","kev_date_added":null,"published":"2022-01-14"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["octobercms"]},"summary":"Authenticated users can bypass Twig sandbox restrictions to execute arbitrary PHP code if safe mode is enabled.","url":"https://insights.sbomify.com/CVE-2021-21264/"}