{"answers":{"affected":"2 open source packages ship an affected version, including rsshub. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-21278 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-21278 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-21278 is a high-severity code injection vulnerability in DIYgod RSSHub, published on 26 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-21278 and fix it if it is affected.\n\nWhat it is: CVE-2021-21278 is a high-severity code injection vulnerability in DIYgod RSSHub, published on 26 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-21278 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- rsshub (npm): affected all versions up to 1.0.0; no fix listed\n- rsshub (npm): affected all versions up to 1.0.0; no fix listed\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-2021-21278/ (Markdown: https://insights.sbomify.com/CVE-2021-21278/index.md)","id":"CVE-2021-21278","markdown":"https://insights.sbomify.com/CVE-2021-21278/index.md","name":"CVE-2021-21278","record":{"aliases":["GHSA-pgjj-866w-fc5c"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"RSS feed generator","requires_auth":"none","summary":"Attackers can execute arbitrary code on the server by injecting malicious scripts into RSSHub routes that use eval or Function constructors.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"rsshub","vendor":"rsshub"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"RSSHub is an open source, easy to use, and extensible RSS feed generator. In RSSHub before version 7f1c430 (non-semantic versioning) there is a risk of code injection. Some routes use `eval` or `Function constructor`, which may be injected by the target site with unsafe code, causing server-side security issues The fix in version 7f1c430 is to temporarily remove the problematic route and added a `no-new-func` rule to eslint.","ecosystems":["npm"],"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":"Risk of code injection in RSSHub","id":"CVE-2021-21278","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Infinite loop in IPv6 neighbor solicitation processing","id":"CVE-2021-21279"},"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["1.0.0"],"package":"rsshub","purl":null,"source":"GHSA-pgjj-866w-fc5c"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":["1.0.0"],"package":"rsshub","purl":"pkg:npm/rsshub","source":"GHSA-pgjj-866w-fc5c"}],"prev":{"headline":"Angular Expressions - Remote Code Execution","id":"CVE-2021-21277"},"products":["RSSHub"],"published":"2021-01-26","related":[{"cvss_score":8.8,"headline":"RSSHub is vulnerable to SSRF (Server-Side Request Forgery)","id":"CVE-2023-22493","kev_date_added":null,"published":"2023-01-13"},{"cvss_score":6.5,"headline":"RSSHub vulnerable to SSRF in /mastodon, /zjoi, and /m4","id":"CVE-2024-27927","kev_date_added":null,"published":"2024-03-06"},{"cvss_score":6.1,"headline":"RSSHub Cross-site Scripting vulnerability caused by internal media proxy","id":"CVE-2024-27926","kev_date_added":null,"published":"2024-03-06"},{"cvss_score":5.4,"headline":"RSSHub is vulnerable to cross-site scripting (XSS) via unvalidated URL parameters","id":"CVE-2023-26491","kev_date_added":null,"published":"2023-03-03"},{"cvss_score":5.3,"headline":"Denial of Service (DoS) vulnerability in RSSHub","id":"CVE-2022-31110","kev_date_added":null,"published":"2022-06-29"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["DIYgod"]},"summary":"Attackers can execute arbitrary code on the server by injecting malicious scripts into RSSHub routes that use eval or Function constructors.","url":"https://insights.sbomify.com/CVE-2021-21278/"}