{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53786 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-53786 is a medium-severity 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-2026-53786 and fix it if it is affected.\n\nWhat it is: CVE-2026-53786 is a medium-severity 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-2026-53786 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-2026-53786/ (Markdown: https://insights.sbomify.com/CVE-2026-53786/index.md)","id":"CVE-2026-53786","markdown":"https://insights.sbomify.com/CVE-2026-53786/index.md","name":"CVE-2026-53786","record":{"aliases":["ALPINE-CVE-2026-53786","AZL-95822","BELL-CVE-2026-53786","DEBIAN-CVE-2026-53786","ECHO-cc28-5bd9-6cca","GHSA-mrc3-6cwx-hch6","UBUNTU-CVE-2026-53786"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"rsync file synchronization","requires_auth":"none","summary":"Authenticated clients can bypass rsync module filter restrictions via malicious merge directives, accessing restricted files.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"rsync","vendor":"samba"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"rsync before 3.5.0 contains a filter rule bypass vulnerability that allows authenticated clients to override module-level filter restrictions by supplying malicious --filter merge file directives. Attackers can inject client-side merge file directives during filter evaluation to introduce rules that supersede daemon module-level restrictions, gaining access to files the module filter was intended to exclude.","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 Filter Rule Bypass via --filter Merge Directive","id":"CVE-2026-53786","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Amasty Order Attributes for Magento 2 \u003c 4.0.0 Unauthenticated Arbitrary File Upload","id":"CVE-2026-53787"},"packages":[],"prev":{"headline":"rsync \u003c 3.5.0 Path Traversal Write Escape via --relative Mode","id":"CVE-2026-53785"},"products":["rsync"],"published":"2026-08-13","related":[{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2017-15994","kev_date_added":null,"published":"2017-10-29"},{"cvss_score":9.1,"headline":"rsync \u003c 3.5.0 Daemon IP Spoofing via PROXY Protocol Header","id":"CVE-2026-53791","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.8,"headline":"rsync 3.2.5 \u003c 3.5.0 Heap Out-of-Bounds Write via files-from Entry","id":"CVE-2026-70461","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.7,"headline":"rsync 3.4.2 \u003c 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion","id":"CVE-2026-70455","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.6,"headline":"rsync 3.1.0 \u003c 3.5.0 Authorization Bypass via auth users Directive Parsing","id":"CVE-2026-70463","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.5,"headline":"rsync \u003c 3.5.0 Symlink Following Arbitrary File Overwrite","id":"CVE-2026-53803","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.4,"headline":"rsync \u003c 3.5.0 Path Traversal via Symlink Module Root","id":"CVE-2026-53784","kev_date_added":null,"published":"2026-08-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-14","vendors":["RsyncProject"]},"summary":"Authenticated clients can bypass rsync module filter restrictions via malicious merge directives, accessing restricted files.","url":"https://insights.sbomify.com/CVE-2026-53786/"}