{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11855 exists.","fix":"No fix has been published for CVE-2026-11855 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-11855 is a high-severity cross-site scripting vulnerability in Unknown Simple Membership, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-11855 and fix it if it is affected.\n\nWhat it is: CVE-2026-11855 is a high-severity cross-site scripting vulnerability in Unknown Simple Membership, published on 6 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11855 exists.\n\nAffected product: Unknown Simple Membership. 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-2026-11855/ (Markdown: https://insights.sbomify.com/CVE-2026-11855/index.md)","id":"CVE-2026-11855","markdown":"https://insights.sbomify.com/CVE-2026-11855/index.md","name":"CVE-2026-11855","record":{"aliases":["GHSA-xmqj-cv3v-f292"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["account_takeover","code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can inject scripts via Stripe webhooks in Simple Membership plugin, leading to admin session hijacking.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"WPScan","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[],"description":"The Simple Membership WordPress plugin before 4.7.5 does not verify the authenticity of Stripe webhook requests when no signing secret is configured, nor escape a value taken from them before outputting it in an administrator notice, allowing unauthenticated attackers to inject arbitrary web scripts that execute in the context of a logged-in administrator.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Simple Membership \u003c 4.7.5 - Unauthenticated Stored XSS via Stripe Webhook API Version","id":"CVE-2026-11855","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"cross-origin Digest auth state leak","id":"CVE-2026-11856"},"packages":[],"prev":{"headline":"Cross-Site Scripting via Authentication Endpoint Error Message in Multiple WSO2 Products","id":"CVE-2026-11854"},"products":["Simple Membership"],"published":"2026-07-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-06","vendors":["Unknown"]},"summary":"Unauthenticated attackers can inject scripts via Stripe webhooks in Simple Membership plugin, leading to admin session hijacking.","url":"https://insights.sbomify.com/CVE-2026-11855/"}