{"answers":{"affected":"1 open source package ship an affected version, including winter/wn-backend-module.","exploited":"There is no known exploitation of CVE-2026-125339 in the wild and no public exploit code.","exposure":"","fix":"Upgrade winter/wn-backend-module to 1.2.14 or later.","what":"CVE-2026-125339 is a medium-severity vulnerability in wintercms winter, published on 10 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-125339 and fix it if it is affected.\n\nWhat it is: CVE-2026-125339 is a medium-severity vulnerability in wintercms winter, published on 10 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-125339 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- winter/wn-backend-module (Packagist): affected from 1.0.319; fixed in 1.2.14\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-2026-125339/ (Markdown: https://insights.sbomify.com/CVE-2026-125339/index.md)","id":"CVE-2026-125339","markdown":"https://insights.sbomify.com/CVE-2026-125339/index.md","name":"CVE-2026-125339","record":{"aliases":["GHSA-p2ch-c2c3-4xm5"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"Winter CMS is a content management system built on the Laravel PHP framework. From 1.0.319 until 1.2.14, Backend\\Classes\\Controller::actionExists() accepts public handler-shaped methods as page actions, so a top-level GET request can invoke state-changing backend AJAX handlers without a CSRF token. Because backend routes use Route::any, CSRF validation skips GET, and the default SameSite=Lax session cookie is sent on cross-site navigation, an unauthenticated attacker can induce an authorized backend user to follow a link such as /backend/system/eventlogs/index_onEmptyLog. Affected handlers in the backend, CMS, and system modules can truncate logs, reset settings, alter backend user state, or delete CMS templates, while URL path segments can select a target record. This issue is fixed in version 1.2.14.","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":"Winter CMS: CSRF through AJAX handler names reachable as backend page actions","id":"CVE-2026-125339","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":null,"year":"2026"},"n_packages":1,"n_references":3,"next":{"headline":"Winter CMS: Reflected XSS through the search query parameter in the backend Table widget","id":"CVE-2026-125340"},"nickname":null,"packages":[{"ecosystem":"Packagist","fixed":["1.2.14"],"introduced":["1.0.319"],"last_affected":[],"package":"winter/wn-backend-module","purl":null,"source":"GHSA-p2ch-c2c3-4xm5"}],"prev":{"headline":"Winter CMS: Stored XSS through cached Brand Settings and Editor Settings custom styles","id":"CVE-2026-125338"},"products":["winter"],"published":"2026-11-10","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":"2026-11-12","vendors":["wintercms"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-125339/"}