CVE-2026-52734Medium· 5.3▾ SunlitZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated P2P peer can cause the mempool download pipeline to retain transactions after verification reaches the outer RATE_LIMIT_DELAY timeout. In zebrad/src/compo…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Aug 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Last analysed / modified upstream
0.4% → 0.5%
ZEBRA is a Zcash node written entirely in Rust. Prior to 4.5.0, an unauthenticated P2P peer can cause the mempool download pipeline to retain transactions after verification reaches the outer RATE_LIMIT_DELAY timeout. In zebrad/src/components/mempool/downloads.rs, Downloads::poll_next removed cancel_handles entries after success and ordinary verification errors, but tokio::time::error::Elapsed did not carry the UnminedTxId needed to remove the timed-out entry. Each retained cancel_handles entry could hold a full Gossip::Tx(UnminedTx), while normal mined-transaction cleanup could not match attacker transactions and no periodic garbage collection or count cap existed. Sustained traffic therefore caused monotonic memory growth until swap pressure degraded the node or the operating system terminated the zebrad process for exhausting memory. This issue is fixed in version 4.5.0.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
zebrad <= 4.4.1Patched in:
zebrad 4.5.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-52732Medium· 5.3ZEBRA is a Zcash node written entirely in Rust
CVE-2026-54496Critical· 9.3Zebra: Missing copy constraint in halo2_gadgets variable-base scalar multiplication allows under-constrained base, breaking Orchard Action circuit soundness
GHSA-443g-gwgp-49x4Low· 3.7zebrad vulnerable to getblocks/getheaders locator CPU amplification via uncapped vector length
CVE-2022-38178High· 7.5By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak
CVE-2022-38177High· 7.5By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak
CVE-2022-50420Medium· 5.5In the Linux kernel, the following vulnerability has been resolved: crypto: hisilicon/hpre - fix resource leak in remove process In hpre_remove(), when the disable operation of qm sriov failed, the following logic should continue to be…