{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2023-53873 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-53873 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-53873 is a high-severity denial of service vulnerability in SyncBreeze, published on 15 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-53873 and fix it if it is affected.\n\nWhat it is: CVE-2023-53873 is a high-severity denial of service vulnerability in SyncBreeze, published on 15 Dec 2025. 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-2023-53873 in the wild and no public exploit code.\n\nAffected product: SyncBreeze. 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-2023-53873/ (Markdown: https://insights.sbomify.com/CVE-2023-53873/index.md)","id":"CVE-2023-53873","markdown":"https://insights.sbomify.com/CVE-2023-53873/index.md","name":"CVE-2023-53873","record":{"aliases":["GHSA-h7mp-qf49-hgph"],"analysis":{"component_type":"server_software","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"SyncBreeze server","requires_auth":"none","summary":"Attackers can crash the SyncBreeze service by sending oversized password parameters to the login endpoint, disrupting availability.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"SyncBreeze 15.2.24 contains a denial of service vulnerability in the login authentication mechanism that allows attackers to crash the service. Attackers can send an oversized password parameter with repeated 'password=' values to overwhelm the login endpoint and potentially disrupt service availability.","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":"SyncBreeze 15.2.24 Denial of Service via Login Endpoint Overflow","id":"CVE-2023-53873","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"GOM Player 2.3.90.5360 Buffer Overflow via Equalizer Preset Name","id":"CVE-2023-53874"},"packages":[],"prev":{"headline":"Wp2Fac 1.0 OS Command Injection via send.php Endpoint","id":"CVE-2023-53872"},"products":["SyncBreeze"],"published":"2025-12-15","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":"2026-04-07","vendors":["Syncbreeze"]},"summary":"Attackers can crash the SyncBreeze service by sending oversized password parameters to the login endpoint, disrupting availability.","url":"https://insights.sbomify.com/CVE-2023-53873/"}