CVE-2026-52731

The record

ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an attacker authenticated to an enabled Zebra RPC endpoint can terminate zebrad by supplying a getblocktemplate LongPollId containing multi-byte UTF-8 characters. In zebra-rpc/src/methods/types/long_poll.rs, LongPollId::from_str originally checked the input byte length and then sliced fixed byte ranges to parse encoded fields. A slice boundary can land inside a multi-byte character and trigger Rust's byte index is not a char boundary panic. Zebra release builds use panic equals abort, so one malformed authenticated RPC request terminates the entire node process and can be repeated after restart. This issue is fixed in version 4.5.0.

Affected packages

Related vulnerabilities

• CVE-2026-100347 kin-openapi is a Go project for handling OpenAPI files. CWE-248
• CVE-2026-102599 Socket.IO enables bidirectional and low-latency communication for every platform. CWE-248
• CVE-2026-107382 MariaDB Connector/Node.js is used to connect applications developed on Node.js to MariaDB… CWE-248
• CVE-2026-106122 The RabbitMQ Java client library allows Java and JVM-based applications to connect to and… CWE-248
• CVE-2026-105757 vLLM is an inference and serving engine for large language models. CWE-248
• CVE-2026-105756 vLLM is an inference and serving engine for large language models. CWE-248
• CVE-2026-103387 A weakness has been identified in garycourt uri-js up to 4.4.1. CWE-248
• CVE-2026-102281 Nest is a framework for building scalable Node.js server-side applications. CWE-248