CVE-2026-27142
March 06, 2026
Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value "refresh". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow "url=" by setting htmlmetacontenturlescape=0.
Affected Packages
https://github.com/golang/go.git (GITHUB):
Affected version(s) =go1.26.0 <go1.26.1Fix Suggestion:
Update to version go1.26.1https://github.com/golang/go.git (GITHUB):
Affected version(s) >=go1 <go1.25.8Fix Suggestion:
Update to version go1.25.8github.com/golang/go (GO):
Affected version(s) =go1.26.0 <go1.26.1Fix Suggestion:
Update to version go1.26.1github.com/golang/go (GO):
Affected version(s) >=go1 <go1.25.8Fix Suggestion:
Update to version go1.25.8Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
EPSS
Base Score:
0.01
