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CVE-2026-27139

FileInfo can escape from a Root in os

Published: Mar 6, 2026Updated: Apr 21, 2026 Sources: CVE List NVD BDUCWE-22
2.5LOW
NVD MITRE
EPSS Score
0.2%
Top 89.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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

AV:LAC:HPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

Red Hat Inc.
commercial·USaka red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
Openshift Service MeshOn-prem
Operating Systems / linux-distro
Red Hat OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat OpenShift VirtualizationOn-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux AIOn-prem
Operating Systems / linux-distro
Go standard library
oss-project·USaka net/http, golang standard library, crypto/x509, html/template
osLibraryLibrary
OSS Libraries / generic-library
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
The Go Project
oss-projectaka go, golang-google-protobuf, crypto
Go
OSS Libraries
Grafana Labs
commercial·US
Grafana AlloyOn-prem
Enterprise Software / itsm-monitoring
golang
oss-project·US
go
OSS Libraries

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

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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