{"answers":{"affected":"3 open source packages ship an affected version, including github.com/gorilla/websocket. It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-27813 in the wild and no public exploit code.","fix":"Upgrade github.com/gorilla/websocket to 1.4.1 or later.","what":"CVE-2020-27813 is a high-severity vulnerability in Debian Debian Linux, published on 2 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-27813 and fix it if it is affected.\n\nWhat it is: CVE-2020-27813 is a high-severity vulnerability in Debian Debian Linux, published on 2 Dec 2020. 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-2020-27813 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/gorilla/websocket (Go): affected all versions; fixed in 1.4.1\n- github.com/gorilla/websocket (Go): affected all versions; fixed in 1.4.1\n- github.com/gorilla/websocket (Go): affected all versions; fixed in 1.4.1\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-2020-27813/ (Markdown: https://insights.sbomify.com/CVE-2020-27813/index.md)","id":"CVE-2020-27813","markdown":"https://insights.sbomify.com/CVE-2020-27813/index.md","name":"CVE-2020-27813","record":{"aliases":["DLA-2520-1","DLA-3420-1","GHSA-3xh2-74w9-5vxm","GHSA-jf24-p9p9-4rjh","GO-2020-0019","RHSA-2021:0833","UBUNTU-CVE-2020-27813","USN-6208-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go websocket library","requires_auth":"none","summary":"An integer overflow in the Gorilla WebSocket library allows attackers to cause a denial of service on HTTP servers handling websocket connections.","user_interaction":"not_required","vuln_class":"integer_overflow"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"debian_linux","vendor":"debian"},{"product":"websocket","vendor":"gorillatoolkit"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"},{"id":"CWE-190","name":"Integer Overflow or Wraparound"}],"description":"An integer overflow vulnerability exists with the length of websocket frames received via a websocket connection. An attacker would use this flaw to cause a denial of service attack on an HTTP Server allowing websocket connections.","ecosystems":["Go","Red Hat:openshift:3.11::el7"],"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":"Integer overflow in github.com/gorilla/websocket","id":"CVE-2020-27813","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"debian:debian_linux","products":["debian:debian_linux"],"type":"integer_overflow","year":"2020"},"n_packages":4,"n_references":4,"next":{"headline":"Memory corruption in openjpeg","id":"CVE-2020-27814"},"packages":[{"ecosystem":"Go","fixed":["1.4.1"],"introduced":["0"],"last_affected":[],"package":"github.com/gorilla/websocket","purl":null,"source":"GHSA-3xh2-74w9-5vxm"},{"ecosystem":"Go","fixed":["1.4.1"],"introduced":["0"],"last_affected":[],"package":"github.com/gorilla/websocket","purl":"pkg:golang/github.com/gorilla/websocket","source":"GHSA-3xh2-74w9-5vxm"},{"ecosystem":"Go","fixed":["1.4.1"],"introduced":["0"],"last_affected":[],"package":"github.com/gorilla/websocket","purl":"pkg:golang/github.com/gorilla/websocket","source":"GO-2020-0019"},{"ecosystem":"Red Hat:openshift:3.11::el7","fixed":["0:3.11.404-1.git.0.2c258fe.el7"],"introduced":["0"],"last_affected":[],"package":"atomic-openshift-cluster-autoscaler","purl":"pkg:rpm/redhat/atomic-openshift-cluster-autoscaler","source":"RHSA-2021:0833"}],"prev":{"headline":"Denial of service in upx","id":"CVE-2020-27802"},"products":["golang-github-gorilla-websocket"],"published":"2020-12-02","related":[{"cvss_score":10,"headline":"ProFTPD Improper Access Control","id":"CVE-2015-3306","kev_date_added":"2026-10-08","published":"2015-05-18"},{"cvss_score":9.9,"headline":"RoundCube Webmail Deserialization of Untrusted Data","id":"CVE-2025-49113","kev_date_added":"2026-02-20","published":"2025-06-02"},{"cvss_score":9.8,"headline":"GNU InetUtils Argument Injection","id":"CVE-2026-24061","kev_date_added":"2026-01-26","published":"2026-01-21"},{"cvss_score":9.8,"headline":"Linux Kernel Improper Check for Unusual or Exceptional Conditions","id":"CVE-2025-39682","kev_date_added":"2026-09-18","published":"2025-09-05"},{"cvss_score":9.8,"headline":"Mozilla Firefox Use-After-Free","id":"CVE-2024-9680","kev_date_added":"2024-10-15","published":"2024-10-09"},{"cvss_score":9.8,"headline":"RARLAB UnRAR Directory Traversal","id":"CVE-2022-30333","kev_date_added":"2022-08-09","published":"2022-05-09"},{"cvss_score":9.8,"headline":"Roundcube Webmail SQL Injection","id":"CVE-2021-44026","kev_date_added":"2023-06-22","published":"2021-11-19"}],"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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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 integer overflow in the Gorilla WebSocket library allows attackers to cause a denial of service on HTTP servers handling websocket connections.","url":"https://insights.sbomify.com/CVE-2020-27813/"}