{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-8840 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-8840 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-8840 is a medium-severity missing authorization vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 15 Aug 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-2026-8840 and fix it if it is affected.\n\nWhat it is: CVE-2026-8840 is a medium-severity missing authorization vulnerability in wpdevart Booking calendar, Appointment Booking System, published on 15 Aug 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-2026-8840 in the wild and no public exploit code.\n\nAffected product: wpdevart Booking calendar, Appointment Booking System. 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-2026-8840/ (Markdown: https://insights.sbomify.com/CVE-2026-8840/index.md)","id":"CVE-2026-8840","markdown":"https://insights.sbomify.com/CVE-2026-8840/index.md","name":"CVE-2026-8840","record":{"aliases":["GHSA-g8cr-48gj-g988"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can modify reservation payment statuses and trigger emails due to missing authorization checks in the Booking calendar plugin.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.2.36. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to mark arbitrary reservations as paid or completed, cancel legitimate payments, auto-approve reservations, and trigger transactional booking emails by writing attacker-supplied payment status and transaction data directly into the payments table. The auto-approval of reservations is only triggered when the 'enable_psuccess_approval' site option is enabled, but payment status manipulation and email dispatch are exploitable regardless of that setting.","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":"Missing authorization in Booking calendar, Appointment Booking System","id":"CVE-2026-8840","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":9,"next":{"headline":"Cross-site scripting in Extra Settings for RocketChat","id":"CVE-2026-8841"},"packages":[],"prev":{"headline":"MapPress Maps for WordPress \u003c= 2.96.6 - Unauthenticated Insecure Direct Object Reference via REST API Endpoints","id":"CVE-2026-8839"},"products":["Booking calendar, Appointment Booking System"],"published":"2026-08-15","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":"2026-08-17","vendors":["wpdevart"]},"summary":"Unauthenticated attackers can modify reservation payment statuses and trigger emails due to missing authorization checks in the Booking calendar plugin.","url":"https://insights.sbomify.com/CVE-2026-8840/"}