{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3967 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-3967 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-3967 is a medium-severity missing authorization vulnerability in zulip/zulip, published on 26 Feb 2022. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-3967 and fix it if it is affected.\n\nWhat it is: CVE-2021-3967 is a medium-severity missing authorization vulnerability in zulip/zulip, published on 26 Feb 2022. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-3967 in the wild and no public exploit code.\n\nAffected product: zulip/zulip. 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-2021-3967/ (Markdown: https://insights.sbomify.com/CVE-2021-3967/index.md)","id":"CVE-2021-3967","markdown":"https://insights.sbomify.com/CVE-2021-3967/index.md","name":"CVE-2021-3967","record":{"aliases":["GHSA-2xp9-33rm-wcwv"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Zulip chat platform","requires_auth":"high_privilege","summary":"An attacker can bypass access controls in the Zulip chat platform to perform unauthorized actions.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntrdev","cpe":[{"product":"zulip","vendor":"zulip"}],"cvss":{"score":4.1,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","version":"3.0"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"Improper Access Control in GitHub repository zulip/zulip prior to 4.10.","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":"Improper Access Control in zulip/zulip","id":"CVE-2021-3967","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Heap-based Buffer Overflow in vim/vim","id":"CVE-2021-3968"},"packages":[],"prev":{"headline":"Usb bluetooth device ACL read cb buffer overflow","id":"CVE-2021-3966"},"products":["zulip/zulip"],"published":"2022-02-26","related":[{"cvss_score":8.6,"headline":"RabbitMQ exposes ports with weak default secrets in Zulip Server","id":"CVE-2021-43799","kev_date_added":null,"published":"2022-01-25"},{"cvss_score":8,"headline":"Crafted link in Zulip message can cause disclosure of credentials","id":"CVE-2022-35962","kev_date_added":null,"published":"2022-08-29"},{"cvss_score":7.5,"headline":"Auth bypass in zulip","id":"CVE-2016-4427","kev_date_added":null,"published":"2022-07-28"},{"cvss_score":6.8,"headline":"Cross-site Scripting (XSS) - Stored in zulip/zulip","id":"CVE-2021-3866","kev_date_added":null,"published":"2022-01-20"},{"cvss_score":6.5,"headline":"Unauthorized user can register an account in specific configurations in Zulip","id":"CVE-2023-28623","kev_date_added":null,"published":"2023-05-19"},{"cvss_score":6.5,"headline":"Ineffective expiration validation for invitation links in Zulip","id":"CVE-2021-43791","kev_date_added":null,"published":"2021-12-02"},{"cvss_score":6.1,"headline":"Zulip: Path Traversal in Import","id":"CVE-2026-26058","kev_date_added":null,"published":"2026-04-03"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["zulip"]},"summary":"An attacker can bypass access controls in the Zulip chat platform to perform unauthorized actions.","url":"https://insights.sbomify.com/CVE-2021-3967/"}