org.apache.zookeeper:zookeeper vulnerabilities
CVEs whose affected-version data names the org.apache.zookeeper:zookeeper package. Each record lists the affected and patched versions; check a specific version with the dependency checker or POST /api/sbom.
5 CVEsRSS
CVE-2026-100235Medium· 6.0Apache ZooKeeper: ACL enforcement bypass allows unauthorized operations to commit after an ACL revocation
Incorrect authorization due to a time-of-check to time-of-use (TOCTOU) race condition in the setACL request handling of Apache ZooKeeper. When a node's ACL is changed via setACL, the pending change is not published to the server's outst…
CVE-2026-100252High· 8.6Apache ZooKeeper: SASL authorization bypass on the client port through a client-supplied authorization ID
Improper Authorization vulnerability in Apache ZooKeeper. When SASL authentication is enabled on the client port, the server's SASL callback handler grants every authorization identity (authzid) that a client requests, without checking …
CVE-2026-100300High· 8.7Apache ZooKeeper: Unauthenticated persistent denial of service via unvalidated quota-node data and paths crashing the transaction-apply thread
Improper handling of exceptional conditions in the quota subsystem of Apache ZooKeeper allows an attacker able to write under the /zookeeper/quota subtree — unauthenticated on default deployments, where that subtree is world-writable — t…
CVE-2026-115448High· 8.7Apache ZooKeeper: Unbounded recursion in snapshot serialization allows a client to render the server unrecoverable
Uncontrolled recursion in Apache ZooKeeper. The server serializes its data tree to a snapshot by recursing one stack frame per znode level, with no depth bound. A client permitted to create znodes (the default root ACL is open) can build…
CVE-2026-100302High· 7.1Apache ZooKeeper: Denial of service through unbounded memory allocation in multiRead request handling
Allocation of Resources Without Limits or Throttling in the multiRead request handler of Apache ZooKeeper allows a remote attacker to crash the server (denial of service) with a single small request. The multiRead handler places no limi…