CVE-2026-27139
FileInfo can escape from a Root in os
Description
On Unix platforms, when listing the contents of a directory using File.ReadDir or File.Readdir the returned FileInfo could reference a file outside of the Root in which the File was opened. The impact of this escape is limited to reading metadata provided by lstat from arbitrary locations on the filesystem without permitting reading or writing files outside the root.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:HAttack ComplexityHigh
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:LConfidentialityLow
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka red hat
Go standard library
oss-project·USaka crypto/x509, golang standard library, net/http, html/template
ООО «Ред Софт»
commercial·RUaka red soft
The Go Project
oss-projectaka golang-google-protobuf, go, crypto
Grafana Labs
commercial·US
golang
oss-project·US
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Collection
Discovery
References
https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk
groups.google.com
https://go.dev/issue/77827
go.dev
https://go.dev/cl/749480
go.dev
and 5 more references View all →
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