{"answers":{"affected":"2 open source packages ship an affected version, including contao/core-bundle.","exploited":"There is no known exploitation of CVE-2026-107851 in the wild and no public exploit code.","fix":"Upgrade contao/core-bundle to 5.7.12 or later.","what":"CVE-2026-107851 is a medium-severity missing authorization vulnerability in contao, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-107851 and fix it if it is affected.\n\nWhat it is: CVE-2026-107851 is a medium-severity missing authorization vulnerability in contao, published on 9 Oct 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-2026-107851 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- contao/core-bundle (Packagist): affected from 5.7.0; fixed in 5.7.12\n- contao/core-bundle (Packagist): affected from 5.7.0; fixed in 5.7.12\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-2026-107851/ (Markdown: https://insights.sbomify.com/CVE-2026-107851/index.md)","id":"CVE-2026-107851","markdown":"https://insights.sbomify.com/CVE-2026-107851/index.md","name":"CVE-2026-107851","record":{"aliases":["GHSA-5974-gfqc-wrcm"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Contao CMS","requires_auth":"low_privilege","summary":"A low-privileged backend user can bypass access controls to read, create, update, or delete records in unauthorized tables due to flawed caching logic.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-524","name":"Use of Cache Containing Sensitive Information"}],"description":"Contao is an Open Source CMS. From version 5.7.0 until 5.7.12, TableAccessVoter::hasAccessToModule() in core-bundle/src/Security/Voter/DataContainer/TableAccessVoter.php caches authorization decisions using only $tokenHash, a hash of the user's security token, and omits the table returned by getDataSource(). If one request first checks a table allowed to the user and then a different denied table, the voter can reuse the allowed result, while DefaultDataContainerVoter can convert an incorrect abstention into a grant. A low-privileged backend user can consequently read, create, update, or delete records in tables outside assigned module permissions, including tables containing member or newsletter-subscriber data. This issue is fixed in version 5.7.12.","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":"Contao: Improper access control in the table access voter","id":"CVE-2026-107851","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Jexactyl: Stripe checkout confirmation accepts mismatched-currency/amount payments as full payment (payment forgery)","id":"CVE-2026-107852"},"packages":[{"ecosystem":"Packagist","fixed":["5.7.12"],"introduced":["5.7.0"],"last_affected":[],"package":"contao/core-bundle","purl":null,"source":"GHSA-5974-gfqc-wrcm"},{"ecosystem":"Packagist","fixed":["5.7.12"],"introduced":["5.7.0"],"last_affected":[],"package":"contao/core-bundle","purl":"pkg:composer/contao/core-bundle","source":"GHSA-5974-gfqc-wrcm"}],"prev":{"headline":"Contao: Improper access control in the preview links module","id":"CVE-2026-107850"},"products":["contao"],"published":"2026-10-09","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-13","vendors":["contao"]},"summary":"A low-privileged backend user can bypass access controls to read, create, update, or delete records in unauthorized tables due to flawed caching logic.","url":"https://insights.sbomify.com/CVE-2026-107851/"}