CVE-2026-27142

MEDIUM EPSS 24.5%
Published Mar 6, 20264mo ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Mar 6, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
24.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 2

VendorProductVersionRange
golanggo* <1.25.8
golanggo1.26.0any

References 4

  • go.dev https://go.dev/cl/752081
    Mailing List
  • go.dev https://go.dev/issue/77954
    Issue Tracking
  • groups.google.com https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk
    Release Notes
  • pkg.go.dev https://pkg.go.dev/vuln/GO-2026-4603
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.