Medium (5.5) in golang go. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in stdlib 1.25.9, 1.26.2.
tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large number of sparse regions encoded in the "old GNU sparse map" format.
Severity
CVSS 3.1
5.5 medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS
0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)