{"answers":{"affected":"2 open source packages ship an affected version, including winter/wn-backend-module.","exploited":"There is no known exploitation of CVE-2026-32258 in the wild and no public exploit code.","fix":"Upgrade winter/wn-backend-module to 1.2.13 or later.","what":"CVE-2026-32258 is a high-severity cross-site scripting vulnerability in wintercms winter, published on 26 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-32258 and fix it if it is affected.\n\nWhat it is: CVE-2026-32258 is a high-severity cross-site scripting vulnerability in wintercms winter, published on 26 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-32258 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- winter/wn-backend-module (Packagist): affected from 1.2.10; fixed in 1.2.13\n- winter/wn-backend-module (Packagist): affected from 1.2.10; fixed in 1.2.13\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-2026-32258/ (Markdown: https://insights.sbomify.com/CVE-2026-32258/index.md)","id":"CVE-2026-32258","markdown":"https://insights.sbomify.com/CVE-2026-32258/index.md","name":"CVE-2026-32258","record":{"aliases":["GHSA-vgp4-2fc4-qff2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Winter CMS","requires_auth":"high_privilege","summary":"Authenticated users with editor permissions can inject malicious scripts via custom styles, leading to stored XSS in the backend.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Winter is a free, open-source content management system (CMS) based on the Laravel PHP framework. From 1.2.10 through 1.2.12, authenticated backend users with the backend.manage_editor permission can store custom Markup Styles that are compiled by the LESS parser and rendered without sanitization on every backend page, allowing stored cross-site scripting. This issue is fixed in version 1.2.13.","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: Stored XSS through Editor Settings custom styles","id":"CVE-2026-32258","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"ImageMagick has a possible stack buffer overflow in sixel encoder","id":"CVE-2026-32259"},"packages":[{"ecosystem":"Packagist","fixed":["1.2.13"],"introduced":["1.2.10"],"last_affected":[],"package":"winter/wn-backend-module","purl":null,"source":"GHSA-vgp4-2fc4-qff2"},{"ecosystem":"Packagist","fixed":["1.2.13"],"introduced":["1.2.10"],"last_affected":[],"package":"winter/wn-backend-module","purl":"pkg:composer/winter/wn-backend-module","source":"GHSA-vgp4-2fc4-qff2"}],"prev":{"headline":"Winter: Stored XSS through Brand Settings custom styles","id":"CVE-2026-32257"},"products":["winter"],"published":"2026-08-26","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":"total"},"state":"PUBLISHED","updated":"2026-08-26","vendors":["wintercms"]},"summary":"Authenticated users with editor permissions can inject malicious scripts via custom styles, leading to stored XSS in the backend.","url":"https://insights.sbomify.com/CVE-2026-32258/"}