{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-33186 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-33186 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-33186 is a high-severity cross-site scripting vulnerability in zulip, published on 30 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-33186 and fix it if it is affected.\n\nWhat it is: CVE-2023-33186 is a high-severity cross-site scripting vulnerability in zulip, published on 30 May 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-33186 in the wild and no public exploit code.\n\nAffected product: 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-2023-33186/ (Markdown: https://insights.sbomify.com/CVE-2023-33186/index.md)","id":"CVE-2023-33186","markdown":"https://insights.sbomify.com/CVE-2023-33186/index.md","name":"CVE-2023-33186","record":{"aliases":["GHSA-4r83-8f94-hrph"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Zulip Server","requires_auth":"low_privilege","summary":"An attacker can execute arbitrary JavaScript in a victim's browser by crafting a malicious message topic that triggers XSS via tooltip hover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"zulip_server","vendor":"zulip"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and chat to make remote work productive and delightful. The main development branch of Zulip Server from May 2, 2023 and later, including beta versions 7.0-beta1 and 7.0-beta2, is vulnerable to a cross-site scripting vulnerability in tooltips on the message feed. An attacker who can send messages could maliciously craft a topic for the message, such that a victim who hovers the tooltip for that topic in their message feed triggers execution of JavaScript code controlled by the attacker.","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":"Cross-site scripting vulnerability in Zulip Server development branch via topic tooltip","id":"CVE-2023-33186","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2023"},"n_packages":0,"n_references":4,"next":{"headline":"highlight vulnerable to cleartext transmission of sensitive information","id":"CVE-2023-33187"},"packages":[],"prev":{"headline":"Incorrect signature verification in django-ses","id":"CVE-2023-33185"},"products":["zulip"],"published":"2023-05-30","related":[{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2019-18933","kev_date_added":null,"published":"2019-11-21"},{"cvss_score":8.8,"headline":"Code injection in n/a","id":"CVE-2020-15070","kev_date_added":null,"published":"2020-08-21"},{"cvss_score":8.8,"headline":"Missing authorization in Zulip Server","id":"CVE-2017-0910","kev_date_added":null,"published":"2017-11-27"},{"cvss_score":8.2,"headline":"Zulip Authentication Backend Configuration Bypass","id":"CVE-2025-31478","kev_date_added":null,"published":"2025-04-16"},{"cvss_score":7.5,"headline":"Denial of service in n/a","id":"CVE-2024-36612","kev_date_added":null,"published":"2024-11-29"},{"cvss_score":7.5,"headline":"Privilege escalation in n/a","id":"CVE-2020-14215","kev_date_added":null,"published":"2020-08-21"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-01-10","vendors":["zulip"]},"summary":"An attacker can execute arbitrary JavaScript in a victim's browser by crafting a malicious message topic that triggers XSS via tooltip hover.","url":"https://insights.sbomify.com/CVE-2023-33186/"}