Cloudanix VulnDB

GHSA-gr3r-crp5-qrrm

Critical · 9.3

Compromised tag of intercom-php published via GitHub

CVSS

9.3

EPSS

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Published

May 7, 2026

CISA due date

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The record

On April 30, 2026, a malicious commit was pushed to the intercom/intercom-php repository and tagged as version 5.0.2, using a compromised service account (github-management-service). This occurred as part of the same supply chain attack that affected intercom-client on npm. The malicious version contained a Composer plugin that acted as a dropper, downloading the Bun JavaScript runtime (version 1.3.13) and executing an obfuscated credential-harvesting payload. The payload targeted cloud provider credentials (AWS, GCP, Azure), environment variables, .env files, SSH keys, local configuration files, and CI/CD secrets. The malicious tag was live between approximately 20:53 UTC and 22:37 UTC on April 30, 2026, before being identified and reverted to a clean commit. This compromise is part of the "Mini Shai-Hulud" supply chain campaign tracked by Wiz and Socket. To check if a consuming project is affected, run: `composer show intercom/intercom-php --version`. If the project installed or updated between 20:53 and 22:37 UTC on April 30, it may have received the malicious version. The malicious commit hash was `e69bf4b3`. The clean commit is `9371eba9`. Check `composer.lock` to verify which version the consuming project is using.

Affected packages

Ecosystem Package Introduced Fixed

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