Vulnerability DatabaseMSC-2026-6354
Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
MSC-2026-6354
Published:July 19, 2026
Updated:July 19, 2026
SleeperGem RubyGems supply-chain attack: malicious dropper distributed via git_credential_manager and dependency injection into Dendreo and fastlane-plugin-run_tests_firebase_testlab. The gem downloads and executes binaries from a remote host (git.disroot.org) with SSL verification disabled, targeting developer machines while avoiding CI environments.
Related Resources (1)
https://www.aikido.dev/blog/sleepergem-rubygems-supply-chain-attack
Do you need more information?
Contact Us
CVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH