{"answers":{"affected":"2 open source packages ship an affected version, including misskey-js. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66402 exists.","fix":"Upgrade misskey-js to 2025.12.0 or later.","what":"CVE-2025-66402 is a high-severity missing authorization vulnerability in misskey-dev misskey, published on 15 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-66402 and fix it if it is affected.\n\nWhat it is: CVE-2025-66402 is a high-severity missing authorization vulnerability in misskey-dev misskey, published on 15 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66402 exists.\n\nAffected packages and fixed versions:\n- misskey-js (npm): affected from 13.0.0-beta.16; fixed in 2025.12.0\n- misskey-js (npm): affected from 13.0.0-beta.16; fixed in 2025.12.0\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-2025-66402/ (Markdown: https://insights.sbomify.com/CVE-2025-66402/index.md)","id":"CVE-2025-66402","markdown":"https://insights.sbomify.com/CVE-2025-66402/index.md","name":"CVE-2025-66402","record":{"aliases":["GHSA-496g-mmpw-j9x3"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Misskey social platform","requires_auth":"low_privilege","summary":"Attackers can export private posts from favorites or clips without permission, exposing sensitive content to unauthorized users.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"misskey","vendor":"misskey"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"misskey.js's export data contains private post data","id":"CVE-2025-66402","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"missing_authorization","year":"2025"},"n_packages":2,"n_references":2,"next":{"headline":"FileRise Vulnerable to Stored XSS via SVG Upload","id":"CVE-2025-66403"},"packages":[{"ecosystem":"npm","fixed":["2025.12.0"],"introduced":["13.0.0-beta.16"],"last_affected":[],"package":"misskey-js","purl":null,"source":"GHSA-496g-mmpw-j9x3"},{"ecosystem":"npm","fixed":["2025.12.0"],"introduced":["13.0.0-beta.16"],"last_affected":[],"package":"misskey-js","purl":"pkg:npm/misskey-js","source":"GHSA-496g-mmpw-j9x3"}],"prev":{"headline":"MCP Watch has a Critical Command Injection in cloneRepo allows Remote Code Execution (RCE) via malicious URL","id":"CVE-2025-66401"},"products":["misskey"],"published":"2025-12-15","related":[{"cvss_score":9.3,"headline":"Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes","id":"CVE-2025-25306","kev_date_added":null,"published":"2025-03-10"},{"cvss_score":9.3,"headline":"Misskey's missing signature validation allows arbitrary users to impersonate any remote user.","id":"CVE-2023-49079","kev_date_added":null,"published":"2023-11-29"},{"cvss_score":9.2,"headline":"Misskey lacks proper authorization checks and input validation","id":"CVE-2026-28431","kev_date_added":null,"published":"2026-03-09"},{"cvss_score":9.1,"headline":"Misskey vulnerable to improper authorization when accessing with third-party application","id":"CVE-2023-52139","kev_date_added":null,"published":"2023-12-29"},{"cvss_score":8.8,"headline":"Missing validation allows spoofed profiles in Misskey","id":"CVE-2024-52590","kev_date_added":null,"published":"2024-12-18"},{"cvss_score":8.8,"headline":"Missing validation allows spoofed profiles and notes in Misskey","id":"CVE-2024-52591","kev_date_added":null,"published":"2024-12-18"},{"cvss_score":8.8,"headline":"SQL injection of notes/search-by-tag","id":"CVE-2023-24812","kev_date_added":null,"published":"2023-02-22"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-12-16","vendors":["misskey-dev"]},"summary":"Attackers can export private posts from favorites or clips without permission, exposing sensitive content to unauthorized users.","url":"https://insights.sbomify.com/CVE-2025-66402/"}