{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-13731 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-13731 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-13731 is a medium-severity cross-site scripting vulnerability in posimyththemes Nexter Extension – Security, Performance, Code Snippets \u0026 Site Toolkit, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-13731 and fix it if it is affected.\n\nWhat it is: CVE-2025-13731 is a medium-severity cross-site scripting vulnerability in posimyththemes Nexter Extension – Security, Performance, Code Snippets \u0026 Site Toolkit, published on 2 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-13731 in the wild and no public exploit code.\n\nAffected product: posimyththemes Nexter Extension – Security, Performance, Code Snippets \u0026 Site Toolkit. 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-2025-13731/ (Markdown: https://insights.sbomify.com/CVE-2025-13731/index.md)","id":"CVE-2025-13731","markdown":"https://insights.sbomify.com/CVE-2025-13731/index.md","name":"CVE-2025-13731","record":{"aliases":["GHSA-vjv3-j4fq-22rw"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"low_privilege","summary":"Authenticated attackers can inject arbitrary scripts via a shortcode, leading to script execution in victim browsers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":6.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"The Nexter Extension – Site Enhancements Toolkit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'nxt-year' shortcode in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Nexter Extension \u003c= 4.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","id":"CVE-2025-13731","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2025"},"n_packages":0,"n_references":4,"next":{"headline":"s2Member \u003c= 251005 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","id":"CVE-2025-13732"},"packages":[],"prev":{"headline":"OpenID Connect Generic Client \u003c= 3.10.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","id":"CVE-2025-13730"},"products":["Nexter Extension – Security, Performance, Code Snippets \u0026 Site Toolkit"],"published":"2025-12-02","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":"partial"},"state":"PUBLISHED","updated":"2026-04-08","vendors":["posimyththemes"]},"summary":"Authenticated attackers can inject arbitrary scripts via a shortcode, leading to script execution in victim browsers.","url":"https://insights.sbomify.com/CVE-2025-13731/"}