{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37056 exists.","fix":"No fix has been published for CVE-2020-37056 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-37056 is a medium-severity vulnerability in Crystal Shard http-protection, published on 30 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-37056 and fix it if it is affected.\n\nWhat it is: CVE-2020-37056 is a medium-severity vulnerability in Crystal Shard http-protection, published on 30 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37056 exists.\n\nAffected product: Crystal Shard http-protection. 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-2020-37056/ (Markdown: https://insights.sbomify.com/CVE-2020-37056/index.md)","id":"CVE-2020-37056","markdown":"https://insights.sbomify.com/CVE-2020-37056/index.md","name":"CVE-2020-37056","record":{"aliases":["GHSA-682r-rv3j-v5mh"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Crystal Shard http-protection","requires_auth":"none","summary":"Attackers can bypass IP-based protection middleware by spoofing request headers, gaining unauthorized access to protected resources.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"}],"description":"Crystal Shard http-protection 0.2.0 contains an IP spoofing vulnerability that allows attackers to bypass protection middleware by manipulating request headers. Attackers can hardcode consistent IP values across X-Forwarded-For, X-Client-IP, and X-Real-IP headers to circumvent security checks and gain unauthorized access.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Crystal Shard http-protection 0.2.0 - IP Spoofing Bypass","id":"CVE-2020-37056","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2020"},"n_packages":0,"n_references":3,"next":{"headline":"Online-Exam-System 2015 - 'fid' SQL Injection","id":"CVE-2020-37057"},"packages":[],"prev":{"headline":"SpyHunter 4 - 'SpyHunter 4 Service' Unquoted Service Path","id":"CVE-2020-37055"},"products":["http-protection"],"published":"2026-01-30","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-28","vendors":["Crystal Shard"]},"summary":"Attackers can bypass IP-based protection middleware by spoofing request headers, gaining unauthorized access to protected resources.","url":"https://insights.sbomify.com/CVE-2020-37056/"}