{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-104816 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-104816 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-104816 is a high-severity cross-site scripting vulnerability in misskey-dev misskey, published on 13 Oct 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-2026-104816 and fix it if it is affected.\n\nWhat it is: CVE-2026-104816 is a high-severity cross-site scripting vulnerability in misskey-dev misskey, published on 13 Oct 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-2026-104816 in the wild and no public exploit code.\n\nAffected product: misskey-dev misskey. 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-2026-104816/ (Markdown: https://insights.sbomify.com/CVE-2026-104816/index.md)","id":"CVE-2026-104816","markdown":"https://insights.sbomify.com/CVE-2026-104816/index.md","name":"CVE-2026-104816","record":{"aliases":["GHSA-p73x-6qrq-34jc"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Federated social media","requires_auth":"none","summary":"Attackers can execute scripts via malicious RSS feed links in Misskey, requiring an upgrade to the latest version.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.5,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Misskey is an open source, federated social media platform. From 12.0.0 until 2026.7.0, the RSS components display feed item links from configured feeds without verifying their URL schemes. Missing URL scheme verification allows an attacker who controls feed content to provide an unsafe-scheme link that causes script execution when a user clicks it in an RSS widget. This issue is fixed in version 2026.7.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Misskey: Cross-site scripting in RSS feed item links","id":"CVE-2026-104816","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Misskey: Lack of rate limiting and size restrictions in RSS fetching API","id":"CVE-2026-104817"},"packages":[],"prev":{"headline":"WordPress Form Block plugin \u003c= 1.8.1 - Cross Site Scripting (XSS) vulnerability","id":"CVE-2026-104814"},"products":["misskey"],"published":"2026-10-13","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":"2026-10-13","vendors":["misskey-dev"]},"summary":"Attackers can execute scripts via malicious RSS feed links in Misskey, requiring an upgrade to the latest version.","url":"https://insights.sbomify.com/CVE-2026-104816/"}