{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-70453 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-70453 is a high-severity denial of service vulnerability in RsyncProject rsync, published on 13 Aug 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-2026-70453 and fix it if it is affected.\n\nWhat it is: CVE-2026-70453 is a high-severity denial of service vulnerability in RsyncProject rsync, published on 13 Aug 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-2026-70453 in the wild and no public exploit code.\n\nAffected product: RsyncProject rsync. 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-2026-70453/ (Markdown: https://insights.sbomify.com/CVE-2026-70453/index.md)","id":"CVE-2026-70453","markdown":"https://insights.sbomify.com/CVE-2026-70453/index.md","name":"CVE-2026-70453","record":{"aliases":["ALPINE-CVE-2026-70453","AZL-95855","BELL-CVE-2026-70453","DEBIAN-CVE-2026-70453","ECHO-079f-04d3-1628","GHSA-8x5r-mjx8-83hv","ROOT-OS-DEBIAN-11-CVE-2026-70453","UBUNTU-CVE-2026-70453"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"rsync file transfer","requires_auth":"none","summary":"Remote attackers can cause denial of service in rsync by sending crafted file lists that trigger quadratic-time hash lookups, exhausting CPU resources.","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-407","name":"Inefficient Algorithmic Complexity"}],"description":"rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.","ecosystems":[],"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":"rsync \u003c 3.5.0 Algorithmic Complexity DoS via hash_search()","id":"CVE-2026-70453","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"rsync \u003c 3.5.0 TLS Certificate Validation Bypass via SSL/OpenSSL Mode","id":"CVE-2026-70454"},"packages":[],"prev":{"headline":"rsync 3.1.0 \u003c 3.5.0 Access Control Bypass via DNS Resolution Failure","id":"CVE-2026-70452"},"products":["rsync"],"published":"2026-08-13","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":"2026-08-14","vendors":["RsyncProject"]},"summary":"Remote attackers can cause denial of service in rsync by sending crafted file lists that trigger quadratic-time hash lookups, exhausting CPU resources.","url":"https://insights.sbomify.com/CVE-2026-70453/"}