{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-73320 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-73320 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-73320 is a medium-severity vulnerability in XenForo, published on 8 Sep 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-2026-73320 and fix it if it is affected.\n\nWhat it is: CVE-2026-73320 is a medium-severity vulnerability in XenForo, published on 8 Sep 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: There is no known exploitation of CVE-2026-73320 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-2026-73320/ (Markdown: https://insights.sbomify.com/CVE-2026-73320/index.md)","id":"CVE-2026-73320","markdown":"https://insights.sbomify.com/CVE-2026-73320/index.md","name":"CVE-2026-73320","record":{"aliases":["GHSA-5j56-975f-v5v8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"XenForo forum software","requires_auth":"none","summary":"Unauthenticated attackers can retrieve private unfurl records, including preview HTML and URLs, by enumerating predictable IDs in XenForo.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"xenforo","vendor":"xenforo"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"XenForo before 2.3.13 contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to retrieve private unfurl records by supplying predictable auto-increment primary key IDs to the unfurl endpoint. Attackers can enumerate or predict result IDs and query the endpoint without any session, user, or visibility checks to obtain rendered preview HTML, original URLs, and query strings from private conversations and other restricted content.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-09-08","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-09-08T16:35:58Z","kind":"github_poc","ref":"https://github.com/BomboBombone/CVE-2026-73320","stars":0,"title":"Sanitized XenForo write-up and proof of concept for CVE-2026-73320."}],"tier":"poc_unverified"},"has_fix":null,"headline":"XenForo \u003c 2.3.13 Unauthenticated Information Disclosure via Unfurl Endpoint","id":"CVE-2026-73320","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"XenForo \u003c 2.3.13 Uncontrolled Recursion DoS via BBCode Parser","id":"CVE-2026-73321"},"packages":[],"prev":{"headline":"XenForo \u003c 2.3.13 XSS via Dynamic Redirect Handler","id":"CVE-2026-73319"},"products":["XenForo"],"published":"2026-09-08","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["XenForo"]},"summary":"Unauthenticated attackers can retrieve private unfurl records, including preview HTML and URLs, by enumerating predictable IDs in XenForo.","url":"https://insights.sbomify.com/CVE-2026-73320/"}