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Vulnerability Details :

CVE-2026-25681

Summary
Assigner-Go
Assigner Org ID-1bb62c36-49e3-4200-9d77-64a1400537cc
Published At-22 May, 2026 | 15:01
Updated At-22 May, 2026 | 17:46
Rejected At-
Credits

Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:Go
Assigner Org ID:1bb62c36-49e3-4200-9d77-64a1400537cc
Published At:22 May, 2026 | 15:01
Updated At:22 May, 2026 | 17:46
Rejected At:
▼CVE Numbering Authority (CNA)
Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

Affected Products
Vendor
golang.org/x/net
Product
golang.org/x/net/html
Collection URL
https://pkg.go.dev
Package Name
golang.org/x/net/html
Program Routines
  • parser.parse
  • Parse
  • ParseFragment
  • ParseFragmentWithOptions
  • ParseWithOptions
Default Status
unaffected
Versions
Affected
  • From 0 before 0.55.0 (semver)
Problem Types
TypeCWE IDDescription
N/AN/ACWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Type: N/A
CWE ID: N/A
Description: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
ensy
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://go.dev/issue/79574
N/A
https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
N/A
https://go.dev/cl/781703
N/A
https://pkg.go.dev/vuln/GO-2026-5029
N/A
Hyperlink: https://go.dev/issue/79574
Resource: N/A
Hyperlink: https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
Resource: N/A
Hyperlink: https://go.dev/cl/781703
Resource: N/A
Hyperlink: https://pkg.go.dev/vuln/GO-2026-5029
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
3.16.1MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@golang.org
Published At:22 May, 2026 | 16:16
Updated At:22 May, 2026 | 18:16

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.1MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CPE Matches
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://go.dev/cl/781703security@golang.org
N/A
https://go.dev/issue/79574security@golang.org
N/A
https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8security@golang.org
N/A
https://pkg.go.dev/vuln/GO-2026-5029security@golang.org
N/A
Hyperlink: https://go.dev/cl/781703
Source: security@golang.org
Resource: N/A
Hyperlink: https://go.dev/issue/79574
Source: security@golang.org
Resource: N/A
Hyperlink: https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8
Source: security@golang.org
Resource: N/A
Hyperlink: https://pkg.go.dev/vuln/GO-2026-5029
Source: security@golang.org
Resource: N/A

Change History

0
Information is not available yet

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Details not found