{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-71278 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-71278 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-71278 is a high-severity authentication bypass vulnerability in XenForo, published on 1 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-71278 and fix it if it is affected.\n\nWhat it is: CVE-2025-71278 is a high-severity authentication bypass vulnerability in XenForo, published on 1 Apr 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-2025-71278 in the wild and no public exploit code.\n\nAffected product: XenForo. 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-2025-71278/ (Markdown: https://insights.sbomify.com/CVE-2025-71278/index.md)","id":"CVE-2025-71278","markdown":"https://insights.sbomify.com/CVE-2025-71278/index.md","name":"CVE-2025-71278","record":{"aliases":["GHSA-499p-g3jm-62mp"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"XenForo forum software","requires_auth":"low_privilege","summary":"OAuth2 clients can request unauthorized scopes, potentially gaining access beyond intended authorization levels in XenForo installations using OAuth2.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"xenforo","vendor":"xenforo"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"XenForo before 2.3.5 allows OAuth2 client applications to request unauthorized scopes. This affects any customer using OAuth2 clients on any version of XenForo 2.3 prior to 2.3.5, potentially allowing client applications to gain access beyond their intended authorization level.","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":"XenForo OAuth2 Unauthorized Scope Request","id":"CVE-2025-71278","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"XenForo Passkey Security Bypass","id":"CVE-2025-71279"},"packages":[],"prev":{"headline":"Cross-site scripting in SOGo","id":"CVE-2025-71276"},"products":["XenForo"],"published":"2026-04-01","related":[{"cvss_score":9.3,"headline":"XenForo Passkey Security Bypass","id":"CVE-2025-71279","kev_date_added":null,"published":"2026-04-01"},{"cvss_score":9.1,"headline":"XenForo \u003c 2.3.13 Authentication Bypass via OAuth2 Token Endpoint","id":"CVE-2026-73309","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":9.1,"headline":"XenForo \u003c 2.3.13 OAuth2 Authorization Code Reuse","id":"CVE-2026-73311","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":9.1,"headline":"XenForo \u003c 2.3.13 Refresh Token Replay via Expired Access Token","id":"CVE-2026-73312","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":8.8,"headline":"Xenforo before 2.2.16 allows CSRF.","id":"CVE-2024-38457","kev_date_added":null,"published":"2024-06-16"},{"cvss_score":8.8,"headline":"Code injection in n/a","id":"CVE-2024-38458","kev_date_added":null,"published":"2024-06-16"},{"cvss_score":8.7,"headline":"XenForo \u003c 2.3.13 Signature Verification Bypass via PayPal REST Webhook","id":"CVE-2026-73314","kev_date_added":null,"published":"2026-09-08"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"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":"total"},"state":"PUBLISHED","updated":"2026-04-01","vendors":["XenForo"]},"summary":"OAuth2 clients can request unauthorized scopes, potentially gaining access beyond intended authorization levels in XenForo installations using OAuth2.","url":"https://insights.sbomify.com/CVE-2025-71278/"}