{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-90561 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-90561 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-90561 is a critical cross-site scripting vulnerability in strapi, published on 13 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-90561 and fix it if it is affected.\n\nWhat it is: CVE-2026-90561 is a critical cross-site scripting vulnerability in strapi, published on 13 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-90561 in the wild and no public exploit code.\n\nAffected product: strapi. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-90561/ (Markdown: https://insights.sbomify.com/CVE-2026-90561/index.md)","id":"CVE-2026-90561","markdown":"https://insights.sbomify.com/CVE-2026-90561/index.md","name":"CVE-2026-90561","record":{"aliases":["GHSA-jh7v-p6jw-jwhc"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Strapi CMS","requires_auth":"low_privilege","summary":"Stored XSS in Strapi WYSIWYG allows Authors to execute scripts in Editor or Admin sessions, leading to account takeover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Strapi versions 4.x through 4.26.2 and 5.x before 5.48.1 contain a stored cross-site scripting vulnerability in the content manager WYSIWYG preview component that fails to strip script tags from rich text. An Author-role user can store malicious script tags in rich text fields that execute in an Editor or Super Admin's session when the preview pane is expanded, enabling account takeover.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Strapi 4.x through 4.26.2 and 5.x before 5.48.1 Stored XSS via WYSIWYG","id":"CVE-2026-90561","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key","id":"CVE-2026-90562"},"packages":[],"prev":{"headline":"zstd-jni 1.2.0 through 1.5.7-13 Out-of-Bounds Read via ZstdDictDecompress","id":"CVE-2026-90560"},"products":["strapi"],"published":"2026-09-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-09-24","vendors":["strapi"]},"summary":"Stored XSS in Strapi WYSIWYG allows Authors to execute scripts in Editor or Admin sessions, leading to account takeover.","url":"https://insights.sbomify.com/CVE-2026-90561/"}