CVE-2026-123555

7.5 HIGHpublic exploit available

Published 2026-11-08 · Updated 2026-11-08

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD description

Zebra from 2.3.0 before 7.0.0 contains a denial of service vulnerability that allows unauthenticated peers to evade misbehavior scoring by sending transactions or blocks with invalid transparent scripts. Attackers can flood mempool with script-failing transactions or serve forged v5 block bodies with altered scriptSig bytes to exhaust CPU and repeatedly stall block sync.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-755

Public exploit & PoC references

https://github.com/ZcashFoundation/zebra/commit/e8db87eb69254e0d4eedd058eadd48bdfa09065a
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-jq45-ghw5-v37x

All references

https://github.com/ZcashFoundation/zebra/commit/e8db87eb69254e0d4eedd058eadd48bdfa09065a
https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-jq45-ghw5-v37x
https://www.vulncheck.com/advisories/zebra-2.3.0-before-7.0.0-denial-of-service-via-unscored-script-verification-failures

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

Related CVEs

UNSCOREDCVE-2026-100300
MEDIUMCVE-2026-101016
MEDIUMCVE-2026-101017
MEDIUMCVE-2026-101099PoC
MEDIUMCVE-2026-102274PoC
HIGHCVE-2026-103936PoC
MEDIUMCVE-2026-105242PoC
MEDIUMCVE-2026-105757PoC

Related by shared AI tags and CWE weakness class. Browse the full archive.