{"answers":{"affected":"2 open source packages ship an affected version, including craftcms/cms.","exploited":"There is no known exploitation of CVE-2026-55794 in the wild and no public exploit code.","fix":"Upgrade craftcms/cms to 5.10.0 or later.","what":"CVE-2026-55794 is a high-severity code injection vulnerability in craftcms cms, published on 1 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55794 and fix it if it is affected.\n\nWhat it is: CVE-2026-55794 is a high-severity code injection vulnerability in craftcms cms, published on 1 Jul 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-2026-55794 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- craftcms/cms (Packagist): affected from 5.9.0; fixed in 5.10.0\n- craftcms/cms (Packagist): affected from 5.9.0; fixed in 5.10.0\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-2026-55794/ (Markdown: https://insights.sbomify.com/CVE-2026-55794/index.md)","id":"CVE-2026-55794","markdown":"https://insights.sbomify.com/CVE-2026-55794/index.md","name":"CVE-2026-55794","record":{"aliases":["GHSA-f74w-488g-8x5r"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Craft CMS","requires_auth":"low_privilege","summary":"Authenticated attackers can execute arbitrary code via Twig injection in the HTTP Referrer header during entry saving.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-1336","name":"Improper Neutralization of Special Elements Used in a Template Engine"}],"description":"Craft CMS is a content management system (CMS). In versions 5.9.0 and above prior to 5.10.0, control panel users with the ability to edit entries can execute unsandboxed Twig code via the HTTP Referrer header, potentially leading to authenticated RCE. The issue happens when a user is saving entries. Strings for a signed redirect URL are being compiled as a Twig template via renderObjectTemplate(), and while a sandboxed alternative already exists (renderSandboxedObjectTemplate()), it is not used in this case. This signed URL can be specified by users, as it is reflected in the “Referer” HTTP request header, which is under attacker control. This issue has been fixed in version 5.10.0.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":"2026-09-21","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-21T19:22:57Z","kind":"github_poc","ref":"https://github.com/TRX-0/CVE-2026-55794-craftcms-ssti","stars":0,"title":"Craft CMS CVE-2026-55794 signed-referrer SSTI PoC"}],"tier":"poc_unverified"},"has_fix":true,"headline":"Craft CMS: Potential authenticated Remote Code Execution via referrer redirect","id":"CVE-2026-55794","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"Craft Commerce: Coupon Code Brute-Force via Rate Limit Bypass","id":"CVE-2026-55795"},"packages":[{"ecosystem":"Packagist","fixed":["5.10.0"],"introduced":["5.9.0"],"last_affected":[],"package":"craftcms/cms","purl":null,"source":"GHSA-f74w-488g-8x5r"},{"ecosystem":"Packagist","fixed":["5.10.0"],"introduced":["5.9.0"],"last_affected":[],"package":"craftcms/cms","purl":"pkg:composer/craftcms/cms","source":"GHSA-f74w-488g-8x5r"}],"prev":{"headline":"Craft CMS: Stored XSS via Structure entry title in table view","id":"CVE-2026-55793"},"products":["cms"],"published":"2026-07-01","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-02","vendors":["craftcms"]},"summary":"Authenticated attackers can execute arbitrary code via Twig injection in the HTTP Referrer header during entry saving.","url":"https://insights.sbomify.com/CVE-2026-55794/"}