{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-22886 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-22886 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-22886 is a medium-severity cross-site scripting vulnerability in Rocket.chat Rocket.chat, published on 26 Mar 2021. 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-2021-22886 and fix it if it is affected.\n\nWhat it is: CVE-2021-22886 is a medium-severity cross-site scripting vulnerability in Rocket.chat Rocket.chat, published on 26 Mar 2021. 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-2021-22886 in the wild and no public exploit code.\n\nAffected product: Rocket.chat Rocket.chat. 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-2021-22886/ (Markdown: https://insights.sbomify.com/CVE-2021-22886/index.md)","id":"CVE-2021-22886","markdown":"https://insights.sbomify.com/CVE-2021-22886/index.md","name":"CVE-2021-22886","record":{"aliases":["GHSA-pvw2-rgm6-7685"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Rocket.Chat","requires_auth":"none","summary":"Remote attackers can inject JavaScript via nested markdown tags, leading to arbitrary file reads and remote code execution on the desktop application.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"rocket.chat","vendor":"rocket.chat"}],"cvss":{"score":6.1,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Rocket.Chat before 3.11, 3.10.5, 3.9.7, 3.8.8 is vulnerable to persistent cross-site scripting (XSS) using nested markdown tags allowing a remote attacker to inject arbitrary JavaScript in a message. This flaw leads to arbitrary file read and RCE on Rocket.Chat desktop app.","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 in Rocket.Chat","id":"CVE-2021-22886","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"rocket.chat:rocket.chat","products":["rocket.chat:rocket.chat"],"type":"xss","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Other in PSA5000, PSA7000","id":"CVE-2021-22887"},"packages":[],"prev":{"headline":"Action Pack contains Information Disclosure / Unintended Method Execution vulnerability","id":"CVE-2021-22885"},"products":["Rocket.Chat"],"published":"2021-03-26","related":[{"cvss_score":9.8,"headline":"Auth bypass in Rocket.Chat","id":"CVE-2026-58066","kev_date_added":null,"published":"2026-07-30"},{"cvss_score":9.8,"headline":"SQL injection in Rocket.Chat","id":"CVE-2026-29198","kev_date_added":null,"published":"2026-04-22"},{"cvss_score":9.8,"headline":"Security feature bypass in Rocket.Chat","id":"CVE-2023-28316","kev_date_added":null,"published":"2023-05-09"},{"cvss_score":9.8,"headline":"Command injection in Rocket.chat - Electron Desktop","id":"CVE-2022-44567","kev_date_added":null,"published":"2022-12-23"},{"cvss_score":9.8,"headline":"Code injection in Rocket.Chat server","id":"CVE-2021-22910","kev_date_added":null,"published":"2021-08-09"},{"cvss_score":9.8,"headline":"Code injection in Rocket.Chat server","id":"CVE-2021-22911","kev_date_added":null,"published":"2021-05-27"},{"cvss_score":9.8,"headline":"Auth bypass in n/a","id":"CVE-2020-29594","kev_date_added":null,"published":"2020-12-30"}],"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":["n/a"]},"summary":"Remote attackers can inject JavaScript via nested markdown tags, leading to arbitrary file reads and remote code execution on the desktop application.","url":"https://insights.sbomify.com/CVE-2021-22886/"}