{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-87091 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-87091 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-87091 is a high-severity cross-site scripting vulnerability in uscnanbu Welcart e-Commerce, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-87091 and fix it if it is affected.\n\nWhat it is: CVE-2026-87091 is a high-severity cross-site scripting vulnerability in uscnanbu Welcart e-Commerce, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-87091 in the wild and no public exploit code.\n\nAffected product: uscnanbu Welcart e-Commerce. 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-2026-87091/ (Markdown: https://insights.sbomify.com/CVE-2026-87091/index.md)","id":"CVE-2026-87091","markdown":"https://insights.sbomify.com/CVE-2026-87091/index.md","name":"CVE-2026-87091","record":{"aliases":["GHSA-75wc-wvc7-9m96"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress e-commerce plugin","requires_auth":"none","summary":"Unauthenticated attackers can inject malicious scripts via settlement notification parameters, leading to code execution in admin views.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":7.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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 Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Settlement Notification Parameters in all versions up to, and including, 2.12.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The IPN endpoint accepts the 'rel' and 'option' parameters with no authentication, nonce validation, or signature verification, meaning any unauthenticated attacker can directly submit malicious payloads that are stored and later rendered in the administrator's settlement error log view.","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":"Welcart e-Commerce \u003c= 2.12.2 - Unauthenticated Stored Cross-Site Scripting via Settlement Notification Parameters","id":"CVE-2026-87091","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":11,"next":{"headline":"MOVEit Transfer Service Directory Writable by Local Users Enables Local Privilege Escalation","id":"CVE-2026-87093"},"packages":[],"prev":{"headline":"Consul vulnerable to an authorization bypass in the catalog node-write path","id":"CVE-2026-87090"},"products":["Welcart e-Commerce"],"published":"2026-10-03","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-03","vendors":["uscnanbu"]},"summary":"Unauthenticated attackers can inject malicious scripts via settlement notification parameters, leading to code execution in admin views.","url":"https://insights.sbomify.com/CVE-2026-87091/"}