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Vulnerability details: VCID-t7g7-8thf-bqgc
Vulnerability ID VCID-t7g7-8thf-bqgc
Aliases CVE-2026-41586
GHSA-prf8-cf2x-rhx7
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-502 Deserialization of Untrusted Data
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2026-41586
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2026-41586
epss 0.00018 https://api.first.org/data/v1/epss?cve=CVE-2026-41586
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-prf8-cf2x-rhx7
cvssv4 9.3 https://github.com/hyperledger/fabric-sdk-java
generic_textual CRITICAL https://github.com/hyperledger/fabric-sdk-java
cvssv3.1_qr CRITICAL https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
cvssv4 9.3 https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
generic_textual CRITICAL https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
ssvc Track* https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
cvssv4 9.3 https://hyperledger.github.io/fabric-gateway
generic_textual CRITICAL https://hyperledger.github.io/fabric-gateway
ssvc Track* https://hyperledger.github.io/fabric-gateway
cvssv4 9.3 https://nvd.nist.gov/vuln/detail/CVE-2026-41586
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2026-41586
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-41586
https://github.com/hyperledger/fabric-sdk-java
https://nvd.nist.gov/vuln/detail/CVE-2026-41586
fabric-gateway https://hyperledger.github.io/fabric-gateway
GHSA-prf8-cf2x-rhx7 https://github.com/advisories/GHSA-prf8-cf2x-rhx7
GHSA-prf8-cf2x-rhx7 https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
No exploits are available.
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 Found at https://github.com/hyperledger/fabric-sdk-java
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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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 Found at https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

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Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2026-05-07T14:13:37Z/ Found at https://github.com/hyperledger/fabric/security/advisories/GHSA-prf8-cf2x-rhx7
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 Found at https://hyperledger.github.io/fabric-gateway
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

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Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2026-05-07T14:13:37Z/ Found at https://hyperledger.github.io/fabric-gateway
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 Found at https://nvd.nist.gov/vuln/detail/CVE-2026-41586
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

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passive

active

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Exploit Prediction Scoring System (EPSS)
Percentile 0.052
EPSS Score 0.00018
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:51:21.596382+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/41xxx/CVE-2026-41586.json 38.6.0