Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Packagist package intercom/intercom-php version 5.0.2 was published with a malicious Composer plugin that downloaded a JavaScript runtime and harvested credentials. The malicious tag was live for about two hours on April 30, 2026, and has since been reverted; the source lists no fixed version for 5.0.2. Projects that installed 5.0.2 in that window should treat accessible credentials as compromised and rotate them, and use version 5.0.1 instead.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 9.3 | Critical | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS No score.
Timeline
- 31 Oct 2026, 14:25 UTC First seen by agentprime
- 31 Oct 2026, 14:25 UTC Confirmed by OSV