{"answers":{"affected":"1 open source package ship an affected version, including zookeeper. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-59739 in the wild and no public exploit code.","fix":"Upgrade zookeeper to a fixed version for your release line: 3.8.7 or 3.9.6.","what":"CVE-2026-59739 is a high-severity vulnerability in Apache ZooKeeper, published on 16 Sep 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-2026-59739 and fix it if it is affected.\n\nWhat it is: CVE-2026-59739 is a high-severity vulnerability in Apache ZooKeeper, published on 16 Sep 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-2026-59739 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- zookeeper (Bitnami): affected from 3.8.0; fixed in 3.8.7, 3.9.6\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-2026-59739/ (Markdown: https://insights.sbomify.com/CVE-2026-59739/index.md)","id":"CVE-2026-59739","markdown":"https://insights.sbomify.com/CVE-2026-59739/index.md","name":"CVE-2026-59739","record":{"aliases":["BIT-zookeeper-2026-59739","CLEANSTART-2026-JM28284","CLEANSTART-2026-ML04549","CLEANSTART-2026-PX58451","CLEANSTART-2026-YK34202","DEBIAN-CVE-2026-59739","GHSA-wrgg-c9rw-j78f","MINI-9hmp-r977-p6cc","MINI-chrw-pg5w-53jg","UBUNTU-CVE-2026-59739"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Distributed coordination service","requires_auth":"none","summary":"Attackers can discover restricted ZooKeeper paths by exploiting a missing ACL check during reconnect replay, potentially exposing sensitive path names.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"zookeeper","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"Information disclosure via SetWatches reconnect replay in Apache ZooKeeper due to missing ACL check. An attacker can discover ACL-restricted paths by registering exists-watches on non-existent paths, then reconnecting after the paths are created with restricted ACLs. Issue is caused by incomplete fix for CVE-2024-23944 (ZOOKEEPER-4799). The fix added ACL checking to WatchManager.triggerWatch(). However, DataTree.setWatches() — the SetWatches/SetWatches2 reconnect replay handler — still calls watcher.process(event) with null ACL, bypassing the check entirely. It's important to note that only the path is exposed by this vulnerability, not the data of znode, but since znode path can contain sensitive information like user name or login ID, this issue is potentially critical.\n\nUsers are recommended to upgrade to version 3.9.6, 3.8.7 which fixes the issue.","ecosystems":["Bitnami"],"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":"Apache ZooKeeper: Information disclosure via SetWatches reconnect replay","id":"CVE-2026-59739","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"BIG-IP HTTP/2 vulnerability","id":"CVE-2026-59762"},"packages":[{"ecosystem":"Bitnami","fixed":["3.8.7","3.9.6"],"introduced":["3.8.0","3.9.0"],"last_affected":[],"package":"zookeeper","purl":"pkg:bitnami/zookeeper","source":"BIT-zookeeper-2026-59739"}],"prev":{"headline":"Coolify: OS Command Injection in Health Check Configuration Allows Remote Code Execution","id":"CVE-2026-59734"},"products":["Apache ZooKeeper"],"published":"2026-09-16","related":[{"cvss_score":9.1,"headline":"Apache ZooKeeper: Authentication bypass with IP-based authentication in Admin Server","id":"CVE-2024-51504","kev_date_added":null,"published":"2024-11-07"},{"cvss_score":9.1,"headline":"Apache ZooKeeper: Authorization bypass in SASL Quorum Peer Authentication","id":"CVE-2023-44981","kev_date_added":null,"published":"2023-10-11"},{"cvss_score":8.1,"headline":"Memory corruption in n/a","id":"CVE-2016-5017","kev_date_added":null,"published":"2016-09-21"},{"cvss_score":7.5,"headline":"Apache ZooKeeper: Improper validation of certificate with host mismatch in FIPS mode","id":"CVE-2026-59969","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":7.5,"headline":"Missing authorization in Apache ZooKeeper","id":"CVE-2026-79993","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":7.5,"headline":"Missing Authorization in Apache ZooKeeper","id":"CVE-2018-8012","kev_date_added":null,"published":"2018-05-21"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"2026-09-17","vendors":["Apache Software Foundation"]},"summary":"Attackers can discover restricted ZooKeeper paths by exploiting a missing ACL check during reconnect replay, potentially exposing sensitive path names.","url":"https://insights.sbomify.com/CVE-2026-59739/"}