Vulnerability Report: GO-2026-4869
standard library- CVE-2026-32288
- Affects: archive/tar
- Published: Apr 07, 2026
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.
Affected Packages
-
PathGo VersionsSymbols
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before go1.25.9, from go1.26.0-0 before go1.26.2
Aliases
References
- https://go.dev/cl/763766
- https://go.dev/issue/78301
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
- https://vuln.go.dev/ID/GO-2026-4869.json
Credits
- Colin Walters (walters@verbum.org), Uuganbayar Lkhamsuren (https://github.com/uug4na), Jakub Ciolek
Feedback
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