{"answers":{"affected":"4 open source packages ship an affected version, including getkirby/cms. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-42051 in the wild and no public exploit code.","fix":"Upgrade getkirby/cms to a fixed version for your release line: 4.9.0 or 5.4.0.","what":"CVE-2026-42051 is a medium-severity vulnerability in getkirby kirby, published on 9 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42051 and fix it if it is affected.\n\nWhat it is: CVE-2026-42051 is a medium-severity vulnerability in getkirby kirby, published on 9 May 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-2026-42051 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- getkirby/cms (Packagist): affected all versions; fixed in 4.9.0\n- getkirby/cms (Packagist): affected all versions; fixed in 4.9.0\n- getkirby/cms (Packagist): affected from 5.0.0; fixed in 5.4.0\n- getkirby/cms (Packagist): affected from 5.0.0; fixed in 5.4.0\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-2026-42051/ (Markdown: https://insights.sbomify.com/CVE-2026-42051/index.md)","id":"CVE-2026-42051","markdown":"https://insights.sbomify.com/CVE-2026-42051/index.md","name":"CVE-2026-42051","record":{"aliases":["GHSA-x68m-c7jf-2572"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Kirby CMS","requires_auth":"low_privilege","summary":"Authenticated users can access sensitive license data and version information via the system API endpoint in Kirby CMS.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"kirby","vendor":"getkirby"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Kirby is an open-source content management system. Prior to versions 4.9.0 and 5.4.0, the system API endpoint leaks license data and installed version to authenticated users. This issue has been patched in versions 4.9.0 and 5.4.0.","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":"Kirby: System API endpoint leaks license data and installed version to authenticated users","id":"CVE-2026-42051","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"beets is Vulnerable to XSS","id":"CVE-2026-42052"},"packages":[{"ecosystem":"Packagist","fixed":["4.9.0"],"introduced":["0"],"last_affected":[],"package":"getkirby/cms","purl":null,"source":"GHSA-x68m-c7jf-2572"},{"ecosystem":"Packagist","fixed":["4.9.0"],"introduced":["0"],"last_affected":[],"package":"getkirby/cms","purl":"pkg:composer/getkirby/cms","source":"GHSA-x68m-c7jf-2572"},{"ecosystem":"Packagist","fixed":["5.4.0"],"introduced":["5.0.0"],"last_affected":[],"package":"getkirby/cms","purl":null,"source":"GHSA-x68m-c7jf-2572"},{"ecosystem":"Packagist","fixed":["5.4.0"],"introduced":["5.0.0"],"last_affected":[],"package":"getkirby/cms","purl":"pkg:composer/getkirby/cms","source":"GHSA-x68m-c7jf-2572"}],"prev":{"headline":"ImageMagick: Stack buffer overflow in XTileImage","id":"CVE-2026-42050"},"products":["kirby"],"published":"2026-05-09","related":[{"cvss_score":8.8,"headline":"Kirby vulnerable to unrestricted file upload of user avatar images","id":"CVE-2024-26483","kev_date_added":null,"published":"2024-02-22"},{"cvss_score":8.1,"headline":"Insufficient permission checks in the language settings in Kirby CMS","id":"CVE-2024-41964","kev_date_added":null,"published":"2024-08-29"},{"cvss_score":7.6,"headline":"Kirby has Server-Side Template Injection (SSTI) via double template resolution in option rendering","id":"CVE-2026-34587","kev_date_added":null,"published":"2026-04-24"},{"cvss_score":7.6,"headline":"Cross-site scripting (XSS) from unsanitized uploaded SVG files","id":"CVE-2021-29460","kev_date_added":null,"published":"2021-04-27"},{"cvss_score":7.3,"headline":"Kirby vulnerable to Insufficient Session Expiration after a password change","id":"CVE-2023-38489","kev_date_added":null,"published":"2023-07-27"},{"cvss_score":7.3,"headline":"Cross-site scripting (XSS) from writer field content in the site frontend","id":"CVE-2021-41252","kev_date_added":null,"published":"2021-11-16"},{"cvss_score":7.3,"headline":"Cross-site scripting (XSS) from image block content in the site frontend","id":"CVE-2021-41258","kev_date_added":null,"published":"2021-11-16"}],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-11","vendors":["getkirby"]},"summary":"Authenticated users can access sensitive license data and version information via the system API endpoint in Kirby CMS.","url":"https://insights.sbomify.com/CVE-2026-42051/"}