CVE-2026-104432— Zebra before 6.3.0 False Readiness via Discarded One-Hash FindBlocks Response
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.
在 Zebra 6.3.0 之前的版本中， 存在一个不当的异常条件检查逻辑，该逻辑会丢弃有效的仅包含单个哈希值的 响应，并错误地将节点状态报告为“接近最新分叉”（close-to-tip）。当对等节点仅返回下一个区块的哈希值时，会导致同步样本长度为零，从而使 端点返回 状态，而实际上节点仍处于落后于最新区块（tip）的状态。
Possible ATT&CK Techniques 1 AI
T1526 · Cloud Service DiscoveryAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ZcashFoundation | zebra | < 6.3.0 |
affected |
6.3.0 |
unaffected |
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2026-104432
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 before 6.3.0 False Readiness via Discarded One-Hash FindBlocks Response
Source: CVE Program / CVE List V5
Vulnerability Description
Zebra before 6.3.0 contains an improper exceptional condition check in ChainSync::obtain_tips that discards valid one-hash FindBlocks responses, falsely reporting close-to-tip status. Peers returning only the next block hash cause a zero-length sync sample, making the /ready endpoint return 200 OK while the node remains behind the tip.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ZcashFoundation | zebra | 0 ~ 6.3.0 | - |
|
II. Public POCs for CVE-2026-104432
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-104432
请登录查看更多情报信息。
Vendor Advisories for CVE-2026-104432 (2)
Same Patch Batch · ZcashFoundation · 2026-10-02 · 18 CVEs total
| CVE-2026-104422 | 7.5 HIGH | Zebra before 6.3.0 Block Sync Denial of Service via Coinbase scriptSig Rewrite |
| CVE-2026-104431 | 7.5 HIGH | Zebra before 6.0.0 Denial of Service via Synchronous Script FFI Verification |
| CVE-2026-104430 | 7.5 HIGH | Zebra 4.5.0 Consensus Split via P2SH Sigop Overcount |
| CVE-2026-104423 | 7.5 HIGH | Zebra before 6.2.1 Denial of Service via Uncapped V6 Shielded Proof Verification |
| CVE-2026-104437 | 7.4 HIGH | Zebra before 4.4.0 Consensus Split via SIGHASH_SINGLE Missing-Output Handling |
| CVE-2026-104435 | 7.4 HIGH | Zebra 4.4.0 Consensus Divergence via V5 SIGHASH_SINGLE Without Output |
| CVE-2026-104434 | 6.5 MEDIUM | Zebra before 8.0.0 Denial of Service via z_listunifiedreceivers RPC |
| CVE-2026-104426 | 5.9 MEDIUM | Zebra before 6.1.0 Quadratic Complexity DoS via Block Transparent Value Check |
| CVE-2026-104427 | 5.9 MEDIUM | Zebra before 6.1.0 Chain Stall via Stale parent_error_map Entry |
| CVE-2026-104425 | 5.3 MEDIUM | Zebra before 6.1.0 Batch-Verification Poisoning DoS via Unattributed Pushed Transactions |
| CVE-2026-104420 | 5.3 MEDIUM | Zebra before 6.3.0 Peer Misbehavior Ban Bypass via Gossiped Blocks |
| CVE-2026-104429 | 5.3 MEDIUM | Zebra before 6.0.0-rc.0 Per-Peer Mempool Admission Bypass via P2P tx Messages |
| CVE-2026-104421 | 5.3 MEDIUM | Zebra before 6.2.1 Block Download Denial of Service via KnownBlock SentHashes Lockout |
| CVE-2026-104428 | 5.3 MEDIUM | Zebra before 11.0.0 Denial of Service via getblock Verbosity 2 |
| CVE-2026-104419 | 4.8 MEDIUM | Zebra before 6.3.0 Honest Peer Banning via Far-Ahead FindBlocks Hashes |
| CVE-2026-104436 | 3.7 LOW | Zebra before 4.5.0 CPU Amplification via Uncapped getblocks/getheaders Locator Length |
| CVE-2026-104424 | 3.7 LOW | Zebra before 6.1.0 Incorrect Block Size Calculation in getblocktemplate |
IV. Related Vulnerabilities
Same product: zebra
-
CVE-2026-104437
Zebra before 4.4.0 Consensus Split via SIGHASH_SINGLE Missin -
CVE-2026-104436
Zebra before 4.5.0 CPU Amplification via Uncapped getblocks/ -
CVE-2026-104434
Zebra before 8.0.0 Denial of Service via z_listunifiedreceiv -
CVE-2026-104435
Zebra 4.4.0 Consensus Divergence via V5 SIGHASH_SINGLE Witho -
CVE-2026-104431
Zebra before 6.0.0 Denial of Service via Synchronous Script
Same vendor: ZcashFoundation
-
CVE-2026-104437
Zebra before 4.4.0 Consensus Split via SIGHASH_SINGLE Missin -
CVE-2026-104436
Zebra before 4.5.0 CPU Amplification via Uncapped getblocks/ -
CVE-2026-104434
Zebra before 8.0.0 Denial of Service via z_listunifiedreceiv -
CVE-2026-104435
Zebra 4.4.0 Consensus Divergence via V5 SIGHASH_SINGLE Witho -
CVE-2026-104431
Zebra before 6.0.0 Denial of Service via Synchronous Script
Same weakness: CWE-754
-
CVE-2026-100296
Improper Check for Unusual or Exceptional Conditions in Anjv -
CVE-2026-95330
Chrome<154.0.8037.57下载状态校验缺陷致权限绕过 -
CVE-2026-73549
Envoy - Incomplete fix for CVE-2026-26310: copyInternetAddre -
CVE-2026-94105
NivoCart through 2.4.0 Destructive Configuration Write via t -
CVE-2026-93387
Chrome 153前Skia状态验证不当致跨源数据泄露
V. Comments for CVE-2026-104432
No comments yet