Medium (5.5) in archiver project archiver. EPSS 6.4% chance of exploitation in the next 30 days. Fixed in github.com/mholt/archiver 3.3.2.
All versions of archiver allow attacker to perform a Zip Slip attack via the "unarchive" functions. It is exploited using a specially crafted zip archive, that holds path traversal filenames. When exploited, a filename in a malicious archive is concatenated to the target extraction directory, which results in the final path ending up outside of the target folder. For instance, a zip may hold a file with a "../../file.exe" location and thus break out of the target folder. If an executable or a configuration file is overwritten with a file containing malicious code, the problem can turn into an arbitrary code execution issue quite easily.
Severity
CVSS 3.1
5.5 medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS
6.4% chance of exploitation in the next 30 days; higher than 93% of CVEs (scores of 2026-10-31)