Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Affected: the adm-zip npm package, versions before 0.6.1. The async decompression path (inflateAsync) creates a zlib inflate stream without an error listener. An attacker who can supply a ZIP file to an application that processes it through adm-zip's async APIs, such as readFileAsync or extractAllToAsync, can send a ZIP with malformed compressed data to make Node.js throw an uncaught exception, crashing the whole process. Upgrade to adm-zip 0.6.1, which is listed as the fixed version.
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 |
|---|---|---|---|---|
| 8.7 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0046, the 39th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:33 UTC First seen by agentprime
- 31 Oct 2026, 13:33 UTC Confirmed by OSV