{"cve":"CVE-2026-41586","nvd":{"published":"2026-05-07T06:16:04.910","modified":"2026-10-26T21:10:00.170","status":"Analyzed","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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-502"],"references":["https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7","https://hyperledger.github.io/fabric-gateway","https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7"],"products":["hyperledger:fabric"],"source":"nvd","synced_at":"2026-10-26T21:38:48.864438205+00:00"},"epss":{"cve":"CVE-2026-41586","score":0.0053,"percentile":0.44582,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-prf8-cf2x-rhx7","url":"https://osv.dev/vulnerability/GHSA-prf8-cf2x-rhx7","summary":"fabric-sdk-java has ObjectInputStream.readObject() without ObjectInputFilter, which allows Java deserialization RCE","modified":"2026-05-20T23:00:14.168816330Z","packages":[{"ecosystem":"Maven","name":"org.hyperledger.fabric-sdk-java:fabric-sdk-java","purl":"pkg:maven/org.hyperledger.fabric-sdk-java/fabric-sdk-java","ranges":[">=1.0.0 <=2.2.26"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}