{"answers":{"affected":"2 open source packages ship an affected version, including yiisoft/yii2. It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-20745 in the wild and no public exploit code.","fix":"Upgrade yiisoft/yii2 to 2.0.16 or later.","what":"CVE-2018-20745 is a medium-severity vulnerability in n/a, published on 28 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-20745 and fix it if it is affected.\n\nWhat it is: CVE-2018-20745 is a medium-severity vulnerability in n/a, published on 28 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2018-20745 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- yiisoft/yii2 (Packagist): affected all versions; fixed in 2.0.16\n- yiisoft/yii2 (Packagist): affected all versions; fixed in 2.0.16\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-2018-20745/ (Markdown: https://insights.sbomify.com/CVE-2018-20745/index.md)","id":"CVE-2018-20745","markdown":"https://insights.sbomify.com/CVE-2018-20745/index.md","name":"CVE-2018-20745","record":{"aliases":["GHSA-cr6r-6xm9-ww22"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Yii PHP framework","requires_auth":"none","summary":"Yii framework incorrectly handles wildcard CORS policies by reflecting arbitrary origins, potentially allowing unauthorized cross-origin requests.","user_interaction":"not_required","vuln_class":"misconfiguration"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"yii","vendor":"yiiframework"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-346","name":"Origin Validation Error"}],"description":"Yii 2.x through 2.0.15.1 actively converts a wildcard CORS policy into reflecting an arbitrary Origin header value, which is incompatible with the CORS security design, and could lead to CORS misconfiguration security problems.","ecosystems":["Packagist"],"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":"Yii Incorrectly Implements CORS","id":"CVE-2018-20745","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"misconfiguration","year":"2018"},"n_packages":2,"n_references":2,"next":{"headline":"Memory corruption in n/a","id":"CVE-2018-20748"},"packages":[{"ecosystem":"Packagist","fixed":["2.0.16"],"introduced":["0"],"last_affected":[],"package":"yiisoft/yii2","purl":null,"source":"GHSA-cr6r-6xm9-ww22"},{"ecosystem":"Packagist","fixed":["2.0.16"],"introduced":["0"],"last_affected":[],"package":"yiisoft/yii2","purl":"pkg:composer/yiisoft/yii2","source":"GHSA-cr6r-6xm9-ww22"}],"prev":{"headline":"github.com/gofiber/fiber/v2 vulnerable to Origin Validation Error","id":"CVE-2018-20744"},"products":["n/a"],"published":"2019-01-28","related":[{"cvss_score":9,"headline":"Yiiframework Yii Improper Protection of Alternate Path","id":"CVE-2024-58136","kev_date_added":"2025-05-02","published":"2025-04-10"},{"cvss_score":9.8,"headline":"Yii2 allows attackers to execute any local .php file via a relative path in the view parameter","id":"CVE-2015-5467","kev_date_added":null,"published":"2023-09-21"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2023-26750","kev_date_added":null,"published":"2023-04-04"},{"cvss_score":9.8,"headline":"Yii SQL injection vulnerability","id":"CVE-2018-7269","kev_date_added":null,"published":"2018-03-21"},{"cvss_score":9.8,"headline":"yii2-redis Potential Remote code execution","id":"CVE-2018-8073","kev_date_added":null,"published":"2018-03-21"},{"cvss_score":8.9,"headline":"Unsafe deserialization in Yii 2","id":"CVE-2020-15148","kev_date_added":null,"published":"2020-09-15"},{"cvss_score":8.1,"headline":"Unsafe Reflection in base Component class in yiisoft/yii2","id":"CVE-2024-4990","kev_date_added":null,"published":"2025-03-20"}],"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":"2024-09-17","vendors":["n/a"]},"summary":"Yii framework incorrectly handles wildcard CORS policies by reflecting arbitrary origins, potentially allowing unauthorized cross-origin requests.","url":"https://insights.sbomify.com/CVE-2018-20745/"}