{"answers":{"affected":"4 open source packages ship an affected version, including getkirby/cms.","exploited":"There is no known exploitation of CVE-2026-54003 in the wild and no public exploit code.","fix":"Upgrade getkirby/cms to a fixed version for your release line: 4.9.4 or 5.4.4.","what":"CVE-2026-54003 is a critical authentication bypass vulnerability in getkirby kirby, published on 9 Jul 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-2026-54003 and fix it if it is affected.\n\nWhat it is: CVE-2026-54003 is a critical authentication bypass vulnerability in getkirby kirby, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-54003 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- getkirby/cms (Packagist): affected all versions; fixed in 4.9.4\n- getkirby/cms (Packagist): affected all versions; fixed in 4.9.4\n- getkirby/cms (Packagist): affected from 5.0.0-alpha.1; fixed in 5.4.4\n- getkirby/cms (Packagist): affected from 5.0.0-alpha.1; fixed in 5.4.4\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-2026-54003/ (Markdown: https://insights.sbomify.com/CVE-2026-54003/index.md)","id":"CVE-2026-54003","markdown":"https://insights.sbomify.com/CVE-2026-54003/index.md","name":"CVE-2026-54003","record":{"aliases":["GHSA-whxw-24jc-cwmv"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Kirby CMS","requires_auth":"none","summary":"Attackers can bypass local IP checks via spoofed headers to install the Panel and create an admin account on unconfigured Kirby sites behind reverse proxies.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-454","name":"External Initialization of Trusted Variables or Data Stores"}],"description":"Kirby is an open-source content management system. Prior to 4.9.4 and from 5.4.4, Kirby sites with no configured user accounts that run on publicly accessible servers behind a reverse proxy setting the Forwarded, X-Client-IP, or X-Real-IP request header could allow remote attackers to install the Panel and create the first admin user because local-IP checks trusted those headers incorrectly. This issue is fixed in versions 4.9.4 and 5.4.4.","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: External Initialization of the Panel on reverse proxy setups with the `Forwarded` header","id":"CVE-2026-54003","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":4,"n_references":8,"next":{"headline":"Kirby: Access to files of top-level drafts is not protected by permissions","id":"CVE-2026-54004"},"packages":[{"ecosystem":"Packagist","fixed":["4.9.4"],"introduced":["0"],"last_affected":[],"package":"getkirby/cms","purl":null,"source":"GHSA-whxw-24jc-cwmv"},{"ecosystem":"Packagist","fixed":["4.9.4"],"introduced":["0"],"last_affected":[],"package":"getkirby/cms","purl":"pkg:composer/getkirby/cms","source":"GHSA-whxw-24jc-cwmv"},{"ecosystem":"Packagist","fixed":["5.4.4"],"introduced":["5.0.0-alpha.1"],"last_affected":[],"package":"getkirby/cms","purl":null,"source":"GHSA-whxw-24jc-cwmv"},{"ecosystem":"Packagist","fixed":["5.4.4"],"introduced":["5.0.0-alpha.1"],"last_affected":[],"package":"getkirby/cms","purl":"pkg:composer/getkirby/cms","source":"GHSA-whxw-24jc-cwmv"}],"prev":{"headline":"Kirby: Cross-site scripting (XSS) from incomplete HTML/XML sanitization in `Dom::sanitize()`","id":"CVE-2026-54002"},"products":["kirby"],"published":"2026-07-09","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-09","vendors":["getkirby"]},"summary":"Attackers can bypass local IP checks via spoofed headers to install the Panel and create an admin account on unconfigured Kirby sites behind reverse proxies.","url":"https://insights.sbomify.com/CVE-2026-54003/"}