CVE•Published 2026-05-07•Modified 2026-08-25•1 article on news•6 live references•NVD data
CVE-2026-41586Hyperledger · Fabric
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
34
Exploit Prediction Scoring System · top 66% of all CVEs
Weaknesses (CWE)
Description
Hyperledger Fabric is an enterprise-grade permissioned distributed ledger framework for developing solutions and applications. From versions 1.0.0 to 2.2.26, Channel.java implements readObject() and exposes deSerializeChannel() which call ObjectInputStream.readObject() on untrusted byte arrays without configuring an ObjectInputFilter. This is a classic Java deserialization RCE pattern. At time of publication, there are no publicly available patches.
Timeline
Published 2026-05-07
Modified 2026-08-25
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2026-41586Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product
product:"Hyperledger Fabric"All exposed Hyperledger Fabric instances — cross-reference with the CVE's affected-version range.
Shodan · banner/body mention
http.html:"Fabric"HTTP body or banner mentions "Fabric" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2026-41586Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-41586Censys host search filtered to this CVE id.
grep.app
CVE-2026-41586Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-41586GitHub code search for direct mentions.
Google dork
"CVE-2026-41586" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-41586 on GitHub.