CVE-2025-58183
Unbounded allocation when parsing GNU sparse map in archive/tar
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 4.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
29 Oct 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input can result in large allocations.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected products
Go standard library · archive/tarWant to know if your infrastructure is exposed to this?
Talk to TrueHacking →