{"answers":{"affected":"4 open source packages ship an affected version, including craftcms/cms. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33159 exists.","fix":"Upgrade craftcms/cms to a fixed version for your release line: 4.17.8 or 5.9.14.","what":"CVE-2026-33159 is a medium-severity missing authorization vulnerability in Craftcms Craft Cms, published on 24 Mar 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-2026-33159 and fix it if it is affected.\n\nWhat it is: CVE-2026-33159 is a medium-severity missing authorization vulnerability in Craftcms Craft Cms, published on 24 Mar 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-2026-33159 exists.\n\nAffected packages and fixed versions:\n- craftcms/cms (Packagist): affected from 4.0.0-RC1; fixed in 4.17.8\n- craftcms/cms (Packagist): affected from 4.0.0-RC1; fixed in 4.17.8\n- craftcms/cms (Packagist): affected from 5.0.0-RC1; fixed in 5.9.14\n- craftcms/cms (Packagist): affected from 5.0.0-RC1; fixed in 5.9.14\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-2026-33159/ (Markdown: https://insights.sbomify.com/CVE-2026-33159/index.md)","id":"CVE-2026-33159","markdown":"https://insights.sbomify.com/CVE-2026-33159/index.md","name":"CVE-2026-33159","record":{"aliases":["GHSA-6mrr-q3pj-h53w"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Craft CMS","requires_auth":"none","summary":"Unauthenticated attackers can execute restricted project configuration sync operations in Craft CMS, allowing unauthorized state changes.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"craft_cms","vendor":"craftcms"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Craft CMS is a content management system (CMS). From version 4.0.0-RC1 to before version 4.17.8 and from version 5.0.0-RC1 to before version 5.9.14, guest users can access Config Sync updater index, obtain signed data, and execute state-changing Config Sync actions (regenerate-yaml, apply-yaml-changes) without authentication. This issue has been patched in versions 4.17.8 and 5.9.14.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Craft CMS: Unauthenticated Users Can Perform Restricted Project Config Sync Operations","id":"CVE-2026-33159","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"craftcms:craft_cms","products":["craftcms:craft_cms"],"type":"missing_authorization","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Craft CMS: Anonymous \"generate transform\" calls for assets can expose private assets via transform URL","id":"CVE-2026-33160"},"packages":[{"ecosystem":"Packagist","fixed":["4.17.8"],"introduced":["4.0.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":null,"source":"GHSA-6mrr-q3pj-h53w"},{"ecosystem":"Packagist","fixed":["4.17.8"],"introduced":["4.0.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":"pkg:composer/craftcms/cms","source":"GHSA-6mrr-q3pj-h53w"},{"ecosystem":"Packagist","fixed":["5.9.14"],"introduced":["5.0.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":null,"source":"GHSA-6mrr-q3pj-h53w"},{"ecosystem":"Packagist","fixed":["5.9.14"],"introduced":["5.0.0-RC1"],"last_affected":[],"package":"craftcms/cms","purl":"pkg:composer/craftcms/cms","source":"GHSA-6mrr-q3pj-h53w"}],"prev":{"headline":"Craft CMS: Low-privilege users could read private asset contents when editing an asset (IDOR)","id":"CVE-2026-33158"},"products":["cms"],"published":"2026-03-24","related":[{"cvss_score":10,"headline":"Craft CMS Code Injection","id":"CVE-2025-32432","kev_date_added":"2026-03-20","published":"2025-04-25"},{"cvss_score":9.3,"headline":"Craft CMS Code Injection","id":"CVE-2024-56145","kev_date_added":"2025-06-02","published":"2024-12-18"},{"cvss_score":8.1,"headline":"Craft CMS Code Injection","id":"CVE-2025-23209","kev_date_added":"2025-02-20","published":"2025-01-18"},{"cvss_score":6.9,"headline":"Craft CMS External Control of Assumed-Immutable Web Parameter","id":"CVE-2025-35939","kev_date_added":"2025-06-02","published":"2025-05-07"},{"cvss_score":10,"headline":"Craft CMS Remote Code Execution vulnerability","id":"CVE-2023-41892","kev_date_added":null,"published":"2023-09-13"},{"cvss_score":9.8,"headline":"Craft CMS Remote Code Injection","id":"CVE-2021-27903","kev_date_added":null,"published":"2021-06-30"},{"cvss_score":9.8,"headline":"SEOmatic for CraftCMS allows Server-Side Template Injection","id":"CVE-2020-9757","kev_date_added":null,"published":"2020-03-04"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-24","vendors":["craftcms"]},"summary":"Unauthenticated attackers can execute restricted project configuration sync operations in Craft CMS, allowing unauthorized state changes.","url":"https://insights.sbomify.com/CVE-2026-33159/"}