Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
adm-zip versions below 0.6.1 apply the Unix permission bits stored in zip entries to extracted files when keepOriginalPermission=true is passed to extractAllTo() or extractEntryTo(), without removing the setuid, setgid, and sticky bits. A crafted zip can therefore produce a setuid file. If extraction runs as root, a lesser-privileged user who later runs that file can gain root execution; the attacker needs only to supply the archive to such a pipeline. Upgrade adm-zip to version 0.6.1 or later.
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 |
|---|---|---|---|---|
| 7.1 | High | 3.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0020, the 9th percentile, on 15 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