{"answers":{"affected":"2 open source packages ship an affected version, including ckeditor4-dev. It affects 7 products.","exploited":"There is no known exploitation of CVE-2021-26271 in the wild and no public exploit code.","fix":"Upgrade ckeditor4-dev to 4.16 or later.","what":"CVE-2021-26271 is a medium-severity denial of service vulnerability in Oracle Agile Product Lifecycle Management, published on 26 Jan 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-2021-26271 and fix it if it is affected.\n\nWhat it is: CVE-2021-26271 is a medium-severity denial of service vulnerability in Oracle Agile Product Lifecycle Management, published on 26 Jan 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-2021-26271 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ckeditor4-dev (npm): affected all versions; fixed in 4.16\n- ckeditor4-dev (npm): affected all versions; fixed in 4.16\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-2021-26271/ (Markdown: https://insights.sbomify.com/CVE-2021-26271/index.md)","id":"CVE-2021-26271","markdown":"https://insights.sbomify.com/CVE-2021-26271/index.md","name":"CVE-2021-26271","record":{"aliases":["DEBIAN-CVE-2021-26271","GHSA-jv4c-7jqq-m34x","UBUNTU-CVE-2021-26271"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"CKEditor rich text editor","requires_auth":"none","summary":"An attacker can cause a denial of service in CKEditor 4 by tricking a user into pasting crafted text into specific dialog inputs.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"ckeditor","vendor":"ckeditor"},{"product":"agile_product_lifecycle_management","vendor":"oracle"},{"product":"application_express","vendor":"oracle"},{"product":"financial_services_analytical_applications_infrastructure","vendor":"oracle"},{"product":"jd_edwards_enterpriseone_tools","vendor":"oracle"},{"product":"siebel_ui_framework","vendor":"oracle"},{"product":"webcenter_sites","vendor":"oracle"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-829","name":"Inclusion of Functionality from Untrusted Control Sphere"}],"description":"It was possible to execute a ReDoS-type attack inside CKEditor 4 before 4.16 by persuading a victim to paste crafted text into the Styles input of specific dialogs (in the Advanced Tab for Dialogs plugin).","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":true,"headline":"CKEditor 4 ReDoS Vulnerability","id":"CVE-2021-26271","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"oracle:agile_product_lifecycle_management","products":["oracle:agile_product_lifecycle_management","oracle:financial_services_analytical_applications_infrastructure","oracle:jd_edwards_enterpriseone_tools","oracle:siebel_ui_framework","oracle:webcenter_sites"],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":4,"next":{"headline":"Inclusion of Functionality from Untrusted Control Sphere in CKEditor 4","id":"CVE-2021-26272"},"packages":[{"ecosystem":"npm","fixed":["4.16"],"introduced":["0"],"last_affected":[],"package":"ckeditor4-dev","purl":null,"source":"GHSA-jv4c-7jqq-m34x"},{"ecosystem":"npm","fixed":["4.16"],"introduced":["0"],"last_affected":[],"package":"ckeditor4-dev","purl":"pkg:npm/ckeditor4-dev","source":"GHSA-jv4c-7jqq-m34x"}],"prev":{"headline":"Auth bypass in n/a","id":"CVE-2021-26267"},"products":["n/a"],"published":"2021-01-26","related":[{"cvss_score":9.8,"headline":"File upload in n/a","id":"CVE-2023-31541","kev_date_added":null,"published":"2023-06-13"},{"cvss_score":8.2,"headline":"Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML","id":"CVE-2021-41164","kev_date_added":null,"published":"2021-11-17"},{"cvss_score":8.2,"headline":"HTML comments vulnerability allowing to execute JavaScript code","id":"CVE-2021-41165","kev_date_added":null,"published":"2021-11-17"},{"cvss_score":7.6,"headline":"Cross-site scripting in ckeditor via abuse of undo functionality","id":"CVE-2021-32808","kev_date_added":null,"published":"2021-08-12"},{"cvss_score":7.5,"headline":"Missing authorization in CKEditor Drupal module","id":"CVE-2011-4972","kev_date_added":null,"published":"2019-11-13"},{"cvss_score":7.3,"headline":"Execution of JavaScript code using malformed HTML in ckeditor","id":"CVE-2021-37695","kev_date_added":null,"published":"2021-08-12"},{"cvss_score":6.8,"headline":"Code injection in n/a","id":"CVE-2012-2067","kev_date_added":null,"published":"2012-09-05"}],"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":["n/a"]},"summary":"An attacker can cause a denial of service in CKEditor 4 by tricking a user into pasting crafted text into specific dialog inputs.","url":"https://insights.sbomify.com/CVE-2021-26271/"}