{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-8891 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-8891 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-8891 is a medium-severity cross-site scripting vulnerability in BitForm – Data management solution for WordPress, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-8891 and fix it if it is affected.\n\nWhat it is: CVE-2026-8891 is a medium-severity cross-site scripting vulnerability in BitForm – Data management solution for WordPress, published on 27 May 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-2026-8891 in the wild and no public exploit code.\n\nAffected product: BitForm – Data management solution for WordPress. 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-2026-8891/ (Markdown: https://insights.sbomify.com/CVE-2026-8891/index.md)","id":"CVE-2026-8891","markdown":"https://insights.sbomify.com/CVE-2026-8891/index.md","name":"CVE-2026-8891","record":{"aliases":["GHSA-fqhh-m4m2-4pc6"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"low_privilege","summary":"Authenticated attackers can inject arbitrary scripts via shortcode attributes, leading to code execution when users view affected pages.","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 BitForm plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'bitform' shortcode in versions up to, and including, 1.1.0. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes ('width' and 'height') in the Shortcode::shortcode() function, which are interpolated directly into the 'style' attribute of an \u003ciframe\u003e element. 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":"BitForm \u003c= 1.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes","id":"CVE-2026-8891","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Cross-site scripting in CM Business Directory – Optimise and showcase local business","id":"CVE-2026-8892"},"packages":[],"prev":{"headline":"code100x Mobile API Authentication Bypass via Header Spoofing","id":"CVE-2026-8890"},"products":["BitForm – Data management solution for WordPress"],"published":"2026-05-27","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":"2026-05-27","vendors":["bitform"]},"summary":"Authenticated attackers can inject arbitrary scripts via shortcode attributes, leading to code execution when users view affected pages.","url":"https://insights.sbomify.com/CVE-2026-8891/"}