{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-45289 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-45289 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-45289 is a medium-severity authentication bypass vulnerability in CloudburstMC Protocol, published on 2 Jun 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-2026-45289 and fix it if it is affected.\n\nWhat it is: CVE-2026-45289 is a medium-severity authentication bypass vulnerability in CloudburstMC Protocol, published on 2 Jun 2026. 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-2026-45289 in the wild and no public exploit code.\n\nAffected product: CloudburstMC Protocol. 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-2026-45289/ (Markdown: https://insights.sbomify.com/CVE-2026-45289/index.md)","id":"CVE-2026-45289","markdown":"https://insights.sbomify.com/CVE-2026-45289/index.md","name":"CVE-2026-45289","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Minecraft Bedrock protocol library","requires_auth":"none","summary":"Attackers can bypass authentication in Minecraft Bedrock Edition servers using this library due to missing validation for FULL type tokens.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"CloudburstMC Protocol is a protocol library for Minecraft Bedrock Edition. Prior to version 3.0.0.Beta12-20260420.182526-15, CloudburstMC Protocol is partially missing validation for FULL type authentication tokens (Cloudburst/Protocol). This vulnerability impacts publicly accessible software depending on the affected versions of Protocol, specifically the EncryptionUtils methods to validate auth payloads for FULL type tokens. This issue has been patched in version 3.0.0.Beta12-20260420.182526-15.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens","id":"CVE-2026-45289","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Cloudburst Network has DoS in RakNet connection handling due to missing bound checks","id":"CVE-2026-45290"},"packages":[],"prev":{"headline":"Marten has an SQL injection vulnerability in its full-text search regConfig parameter","id":"CVE-2026-45288"},"products":["Protocol"],"published":"2026-06-02","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-03","vendors":["CloudburstMC"]},"summary":"Attackers can bypass authentication in Minecraft Bedrock Edition servers using this library due to missing validation for FULL type tokens.","url":"https://insights.sbomify.com/CVE-2026-45289/"}