{"answers":{"affected":"3 open source packages ship an affected version, including gopkg.in/macaron.v1. It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-12666 in the wild and no public exploit code.","fix":"Upgrade gopkg.in/macaron.v1 to 1.3.7 or later.","what":"CVE-2020-12666 is a medium-severity vulnerability in Fedoraproject Fedora, published on 5 May 2020. 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-2020-12666 and fix it if it is affected.\n\nWhat it is: CVE-2020-12666 is a medium-severity vulnerability in Fedoraproject Fedora, published on 5 May 2020. 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-2020-12666 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- gopkg.in/macaron.v1 (Go): affected all versions; fixed in 1.3.7\n- gopkg.in/macaron.v1 (Go): affected all versions; fixed in 1.3.7\n- gopkg.in/macaron.v1 (Go): affected all versions; fixed in 1.3.7\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-2020-12666/ (Markdown: https://insights.sbomify.com/CVE-2020-12666/index.md)","id":"CVE-2020-12666","markdown":"https://insights.sbomify.com/CVE-2020-12666/index.md","name":"CVE-2020-12666","record":{"aliases":["GHSA-733f-44f3-3frw","GO-2020-0039"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Go authentication library","requires_auth":"none","summary":"An open redirect vulnerability in the macaron Go library allows attackers to redirect users to malicious sites via crafted URLs.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"macaron","vendor":"go-macaron"}],"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-601","name":"URL Redirection to Untrusted Site"}],"description":"macaron before 1.3.7 has an open redirect in the static handler, as demonstrated by the http://127.0.0.1:4000//example.com/ URL.","ecosystems":["Go"],"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":"gopkg.in/macaron.v1 Open Redirect vulnerability","id":"CVE-2020-12666","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"fedoraproject:fedora","products":["fedoraproject:fedora"],"type":"open_redirect","year":"2020"},"n_packages":3,"n_references":3,"next":{"headline":"Denial of service in n/a","id":"CVE-2020-12667"},"packages":[{"ecosystem":"Go","fixed":["1.3.7"],"introduced":["0"],"last_affected":[],"package":"gopkg.in/macaron.v1","purl":null,"source":"GHSA-733f-44f3-3frw"},{"ecosystem":"Go","fixed":["1.3.7"],"introduced":["0"],"last_affected":[],"package":"gopkg.in/macaron.v1","purl":"pkg:golang/gopkg.in/macaron.v1","source":"GHSA-733f-44f3-3frw"},{"ecosystem":"Go","fixed":["1.3.7"],"introduced":["0"],"last_affected":[],"package":"gopkg.in/macaron.v1","purl":"pkg:golang/gopkg.in/macaron.v1","source":"GO-2020-0039"}],"prev":{"headline":"Denial of service in n/a","id":"CVE-2020-12663"},"products":["n/a"],"published":"2020-05-05","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2024-08-04","vendors":["n/a"]},"summary":"An open redirect vulnerability in the macaron Go library allows attackers to redirect users to malicious sites via crafted URLs.","url":"https://insights.sbomify.com/CVE-2020-12666/"}