Description
If the PATH environment variable contains paths which are executables (rather than just directories), passing certain strings to LookPath ("", ".", and ".."), can result in the binaries listed in the PATH being unexpectedly returned.
References (5)
Core 5
Core References
Patch
https://go.dev/cl/691775
Exploit, Issue Tracking, Third Party Advisory
https://go.dev/issue/74466
Mailing List, Release Notes
https://groups.google.com/g/golang-announce/c/x5MKroML2yM
Vendor Advisory
https://pkg.go.dev/vuln/GO-2025-3956
Mailing List, Issue Tracking
http://www.openwall.com/lists/oss-security/2025/08/06/1
Scores
CVSS v3
6.5
EPSS
0.0003
EPSS Percentile
9.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
Status
published
Products (1)
golang/go
< 1.23.12
Published
Sep 18, 2025
Tracked Since
Feb 18, 2026