Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-44498— ZEBRA: Block Validator Undercounts Coinbase and P2SH Sigops

Quick assessment

Affected
ZcashFoundation zebra
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

zebra是Zcash Foundation开源的一个用Rust编写的Zcash全节点实现。 zebra 4.4.0之前版本存在安全漏洞，该漏洞源于区块验证器低估透明签名操作次数，可能导致网络分裂。

AI Predicted 7.5 Difficulty: Hard EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
ZcashFoundation zebra < 4.4.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-44498

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
ZEBRA: Block Validator Undercounts Coinbase and P2SH Sigops
Source: CVE Program / CVE List V5
Vulnerability Description
ZEBRA is a Zcash node written entirely in Rust. Prior to version 4.4.0, Zebra's block validator undercounts transparent signature operations against the 20000-sigop block limit (MAX_BLOCK_SIGOPS), allowing it to accept blocks that zcashd rejects with bad-blk-sigops. A miner who produces such a block can split the network: Zebra nodes follow the offending chain while zcashd nodes do not. This issue has been patched in version 4.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
数值计算不正确
Source: CVE Program / CVE List V5
Vulnerability Title
zebra 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
zebra是Zcash Foundation开源的一个用Rust编写的Zcash全节点实现。 zebra 4.4.0之前版本存在安全漏洞，该漏洞源于区块验证器低估透明签名操作次数，可能导致网络分裂。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ZcashFoundation zebra < 4.4.0 -

II. Public POCs for CVE-2026-44498

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-44498

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-44498 (1)

Vendor Pages for CVE-2026-44498 (1)

Same Patch Batch · ZcashFoundation · 2026-05-08 · 7 CVEs total

CVE-2026-44500 5.3 MEDIUM ZEBRA: Allocation Amplification in Inbound Network Deserializers
CVE-2026-41585 ZEBRA: Denial of Service via Interrupted JSON-RPC Requests from Authenticated Clients
CVE-2026-41583 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling
CVE-2026-41584 ZEBRA: rk Identity Point Panic in Transaction Verification
CVE-2026-44497 ZEBRA: Consensus Divergence in Transparent Sighash Hash-Type Handling due to Stale Buffer
CVE-2026-44499 ZEBRA: Permanent Block Discovery Halt via Gossip Queue Saturation and Syncer Poisoning

IV. Related Vulnerabilities

Same product: zebra
Same vendor: ZcashFoundation
Same weakness: CWE-682

V. Comments for CVE-2026-44498

No comments yet

Leave a comment