{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-22567 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-22567 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-22567 is a medium-severity code injection vulnerability in Google LLC Dart SDK, published on 5 Jan 2022. 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-2021-22567 and fix it if it is affected.\n\nWhat it is: CVE-2021-22567 is a medium-severity code injection vulnerability in Google LLC Dart SDK, published on 5 Jan 2022. 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-2021-22567 in the wild and no public exploit code.\n\nAffected product: Google LLC Dart SDK. 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-2021-22567/ (Markdown: https://insights.sbomify.com/CVE-2021-22567/index.md)","id":"CVE-2021-22567","markdown":"https://insights.sbomify.com/CVE-2021-22567/index.md","name":"CVE-2021-22567","record":{"aliases":[],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Dart SDK","requires_auth":"low_privilege","summary":"Attackers can hide malicious code in Dart source files using bidirectional Unicode, bypassing code reviews to execute arbitrary code.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"dart_software_development_kit","vendor":"dart"}],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"Bidirectional Unicode text can be interpreted and compiled differently than how it appears in editors which can be exploited to get nefarious code passed a code review by appearing benign. An attacker could embed a source that is invisible to a code reviewer that modifies the behavior of a program in unexpected ways.","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":"Bidirectional Override in Dart SDK","id":"CVE-2021-22567","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Dart - Publishing to third-party package repositories may expose pub.dev credentials","id":"CVE-2021-22568"},"packages":[],"prev":{"headline":"Incorrect mapping of Executable bits in Fuchsia Kernel","id":"CVE-2021-22566"},"products":["Dart SDK"],"published":"2022-01-05","related":[{"cvss_score":9.8,"headline":"Incorrect parsing of the backslash characters in Dart library","id":"CVE-2022-3095","kev_date_added":null,"published":"2022-10-27"},{"cvss_score":8.8,"headline":"Dart - Publishing to third-party package repositories may expose pub.dev credentials","id":"CVE-2021-22568","kev_date_added":null,"published":"2021-12-09"},{"cvss_score":6.6,"headline":"Dart SDK and Flutter SDK have Zip slip in Dart Pub package extraction","id":"CVE-2026-27704","kev_date_added":null,"published":"2026-02-25"},{"cvss_score":6.5,"headline":"Auth bypass in Dark SDK","id":"CVE-2022-0451","kev_date_added":null,"published":"2022-02-18"},{"cvss_score":6.1,"headline":"XSS in Dart SDK","id":"CVE-2021-22540","kev_date_added":null,"published":"2021-04-22"},{"cvss_score":5.4,"headline":"XSS in Dart","id":"CVE-2020-8923","kev_date_added":null,"published":"2020-03-26"}],"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":"2025-04-21","vendors":["Google LLC"]},"summary":"Attackers can hide malicious code in Dart source files using bidirectional Unicode, bypassing code reviews to execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2021-22567/"}