CVE-2025-47906

Unexpected paths returned from LookPath in os/exec

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.

Affected

Go standard library · os/exec

CVSS v3.1 CNA

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

EPSS

0.55% chance of exploitation in the next 30 days, 45th percentile

Published

2025-09-18

Updated

2025-11-04

Proof-of-concept exploits (1)

• https://go.dev/issue/74466

Security advisories

• https://pkg.go.dev/vuln/GO-2025-3956
• https://go.dev/cl/691775
• https://groups.google.com/g/golang-announce/c/x5MKroML2yM
• http://www.openwall.com/lists/oss-security/2025/08/06/1

References

• CVE Record
• NVD entry