{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-91109 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-91109 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-91109 is a medium-severity vulnerability in croixhaug Simply Schedule Appointments, published on 1 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-91109 and fix it if it is affected.\n\nWhat it is: CVE-2026-91109 is a medium-severity vulnerability in croixhaug Simply Schedule Appointments, published on 1 Oct 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-2026-91109 in the wild and no public exploit code.\n\nAffected product: croixhaug Simply Schedule Appointments. 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-2026-91109/ (Markdown: https://insights.sbomify.com/CVE-2026-91109/index.md)","id":"CVE-2026-91109","markdown":"https://insights.sbomify.com/CVE-2026-91109/index.md","name":"CVE-2026-91109","record":{"aliases":["GHSA-hm3p-9g7v-6rfw"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"low_privilege","summary":"Authenticated attackers can leak co-booker PII and tokens to read, modify, or cancel appointments via insecure direct object reference.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"The Simply Schedule Appointments plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.6.12.31 via the 'complete_group' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to disclose every co-booker's private per-appointment id_token (exposed as public_token) alongside their PII (name and email address), then use each leaked token to read, overwrite arbitrary appointment meta on, or cancel the co-booker's appointment via the same REST controller. Exploitation requires the attacker to possess a valid id_token for any single appointment within the targeted group booking.","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":"Information disclosure in Simply Schedule Appointments","id":"CVE-2026-91109","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Discourse: Encode action_code_who in mention URLs","id":"CVE-2026-91119"},"packages":[],"prev":{"headline":"Missing authorization in Alt Text AI – Automatically generate image alt text for SEO and accessibility","id":"CVE-2026-91108"},"products":["Simply Schedule Appointments"],"published":"2026-10-01","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":"2026-10-03","vendors":["croixhaug"]},"summary":"Authenticated attackers can leak co-booker PII and tokens to read, modify, or cancel appointments via insecure direct object reference.","url":"https://insights.sbomify.com/CVE-2026-91109/"}