Apache

CVE-2026-115448: 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.

CVE-2026-115448 Nov 4, 2026 Source: Vendor

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 a chain of nested znodes deep enough that taking a snapshot exhausts the JVM stack and kills the snapshot thread; sizes stay within jute.maxbuffer, so existing limits do not prevent it. This is a denial of service that becomes persistent: on restart the server r

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-115448

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Credited

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CVE-2026-115448 BR2026-0000-042223 unclaimed

Credited as Sai Sreewathsa Kovalluri, Shon Babu, and Kannan K of Innspark Solutions

CVE-2026-115448 BR2026-0000-042224 unclaimed

Credited as Prasath Jayasundar & PayPal Cyber Security Team