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20 vulnerabilities found for golang.org/x/net/html by golang.org/x/net
CVE-2026-42506 (GCVE-0-2026-42506)
Vulnerability from nvd – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:45
VLAI
EPSS
VEX
Title
Invoking incorrect handling of namespaced elements in foreign content in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
{
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"metrics": [
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},
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"cna": {
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "parser.parse"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
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}
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{
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{
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},
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},
{
"url": "https://go.dev/cl/781700"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5025"
}
],
"title": "Invoking incorrect handling of namespaced elements in foreign content in golang.org/x/net/html"
}
},
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CVE-2026-42502 (GCVE-0-2026-42502)
Vulnerability from nvd – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:17
VLAI
EPSS
VEX
Title
Invoking incorrect handling of HTML elements in foreign content in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
{
"containers": {
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{
"metrics": [
{
"cvssV3_1": {
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"attackVector": "NETWORK",
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"cna": {
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{
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"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "parser.parse"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
"vendor": "golang.org/x/net",
"versions": [
{
"lessThan": "0.55.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
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{
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"value": "Tristan Madani"
}
],
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}
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{
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},
{
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},
{
"url": "https://go.dev/cl/781701"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5027"
}
],
"title": "Invoking incorrect handling of HTML elements in foreign content in golang.org/x/net/html"
}
},
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CVE-2026-27136 (GCVE-0-2026-27136)
Vulnerability from nvd – Published: 2026-05-22 15:01 – Updated: 2026-05-22 16:59
VLAI
EPSS
VEX
Title
Invoking duplicate attributes can cause XSS in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
{
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"metrics": [
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},
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"cna": {
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "parser.parse"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
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"url": "https://go.dev/cl/781685"
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CVE-2026-25681 (GCVE-0-2026-25681)
Vulnerability from nvd – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:46
VLAI
EPSS
VEX
Title
Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
{
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{
"metrics": [
{
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"timestamp": "2026-05-22T17:46:00.775026Z",
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"product": "golang.org/x/net/html",
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{
"name": "parser.parse"
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{
"name": "Parse"
},
{
"name": "ParseFragment"
},
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"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
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"url": "https://go.dev/cl/781703"
},
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"url": "https://pkg.go.dev/vuln/GO-2026-5029"
}
],
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}
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CVE-2026-25680 (GCVE-0-2026-25680)
Vulnerability from nvd – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:00
VLAI
EPSS
VEX
Title
Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html
Summary
Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
{
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{
"metrics": [
{
"cvssV3_1": {
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"attackVector": "NETWORK",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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"timestamp": "2026-05-22T17:00:30.926552Z",
"version": "2.0.3"
},
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{
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"product": "golang.org/x/net/html",
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{
"name": "parser.parse"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
"vendor": "golang.org/x/net",
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{
"lessThan": "0.55.0",
"status": "affected",
"version": "0",
"versionType": "semver"
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"lang": "en",
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],
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{
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{
"description": "CWE-407: Inefficient Algorithmic Complexity",
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}
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],
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},
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{
"url": "https://go.dev/cl/781702"
},
{
"url": "https://go.dev/issue/79573"
},
{
"url": "https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5028"
}
],
"title": "Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html"
}
},
"cveMetadata": {
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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}
CVE-2025-58190 (GCVE-0-2025-58190)
Vulnerability from nvd – Published: 2026-02-05 17:48 – Updated: 2026-02-12 15:22
VLAI
EPSS
VEX
Title
Infinite parsing loop in golang.org/x/net
Summary
The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-835 - Loop with Unreachable Exit Condition
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.45.0
(semver)
|
Credits
{
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{
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{
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},
{
"name": "Parse"
},
{
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{
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}
],
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{
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},
{
"url": "https://go.dev/cl/709875"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4441"
}
],
"title": "Infinite parsing loop in golang.org/x/net"
}
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CVE-2025-47911 (GCVE-0-2025-47911)
Vulnerability from nvd – Published: 2026-02-05 17:48 – Updated: 2026-02-12 15:23
VLAI
EPSS
VEX
Title
Quadratic parsing complexity in golang.org/x/net/html
Summary
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.45.0
(semver)
|
Credits
{
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"metrics": [
{
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"attackVector": "NETWORK",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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}
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},
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}
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{
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"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "parser.parse"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
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}
],
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{
"lang": "en",
"value": "Guido Vranken"
},
{
"lang": "en",
"value": "Jakub Ciolek"
}
],
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{
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],
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},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4440"
}
],
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}
},
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CVE-2025-22872 (GCVE-0-2025-22872)
Vulnerability from nvd – Published: 2025-04-16 17:13 – Updated: 2025-05-16 23:03
VLAI
EPSS
VEX
Title
Incorrect Neutralization of Input During Web Page Generation in x/net in golang.org/x/net
Summary
The tokenizer incorrectly interprets tags with unquoted attribute values that end with a solidus character (/) as self-closing. When directly using Tokenizer, this can result in such tags incorrectly being marked as self-closing, and when using the Parse functions, this can result in content following such tags as being placed in the wrong scope during DOM construction, but only when tags are in foreign content (e.g. <math>, <svg>, etc contexts).
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.38.0
(semver)
|
Credits
{
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{
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"attackVector": "NETWORK",
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"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
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}
},
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},
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"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
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},
"references": [
{
"url": "https://security.netapp.com/advisory/ntap-20250516-0007/"
}
],
"title": "CVE Program Container"
}
],
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "Tokenizer.readStartTag"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
},
{
"name": "Tokenizer.Next"
}
],
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}
],
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"lang": "en",
"value": "Sean Ng (https://ensy.zip)"
}
],
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{
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}
],
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{
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"description": "CWE-79",
"lang": "en"
}
]
}
],
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},
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"url": "https://go.dev/cl/662715"
},
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"url": "https://go.dev/issue/73070"
},
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"url": "https://groups.google.com/g/golang-announce/c/ezSKR9vqbqA"
},
{
"url": "https://pkg.go.dev/vuln/GO-2025-3595"
}
],
"title": "Incorrect Neutralization of Input During Web Page Generation in x/net in golang.org/x/net"
}
},
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},
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CVE-2024-45338 (GCVE-0-2024-45338)
Vulnerability from nvd – Published: 2024-12-18 20:38 – Updated: 2025-02-21 18:03
VLAI
EPSS
VEX
Title
Non-linear parsing of case-insensitive content in golang.org/x/net/html
Summary
An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing. This could cause a denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.33.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"version": "3.1"
}
},
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}
],
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"timestamp": "2024-12-31T19:51:42.228627Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
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{
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{
"cweId": "CWE-1333",
"description": "CWE-1333 Inefficient Regular Expression Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"providerMetadata": {
"dateUpdated": "2025-02-21T18:03:32.301Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
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{
"url": "https://security.netapp.com/advisory/ntap-20250221-0001/"
}
],
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}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "parseDoctype"
},
{
"name": "htmlIntegrationPoint"
},
{
"name": "inTableIM"
},
{
"name": "inBodyIM"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
},
{
"name": "ParseFragmentWithOptions"
},
{
"name": "ParseWithOptions"
}
],
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"versions": [
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"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
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{
"lang": "en",
"value": "Guido Vranken"
}
],
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{
"lang": "en",
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}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-405: Asymmetric Resource Consumption (Amplification)",
"lang": "en"
}
]
}
],
"providerMetadata": {
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"shortName": "Go"
},
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"url": "https://groups.google.com/g/golang-announce/c/wSCRmFnNmPA/m/Lvcd0mRMAwAJ"
},
{
"url": "https://pkg.go.dev/vuln/GO-2024-3333"
}
],
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}
},
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"state": "PUBLISHED"
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CVE-2023-3978 (GCVE-0-2023-3978)
Vulnerability from nvd – Published: 2023-08-02 19:48 – Updated: 2024-09-27 21:57
VLAI
EPSS
VEX
Title
Improper rendering of text nodes in golang.org/x/net/html
Summary
Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.13.0
(semver)
|
{
"containers": {
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{
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],
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},
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"x_transferred"
],
"url": "https://pkg.go.dev/vuln/GO-2023-1988"
}
],
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},
{
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],
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"timestamp": "2024-09-27T21:49:56.220204Z",
"version": "2.0.3"
},
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],
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},
"title": "CISA ADP Vulnrichment"
}
],
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"product": "golang.org/x/net/html",
"programRoutines": [
{
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},
{
"name": "Render"
}
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"versions": [
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}
],
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"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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],
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}
],
"title": "Improper rendering of text nodes in golang.org/x/net/html"
}
},
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"dateUpdated": "2024-09-27T21:57:51.807Z",
"state": "PUBLISHED"
},
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CVE-2026-27136 (GCVE-0-2026-27136)
Vulnerability from cvelistv5 – Published: 2026-05-22 15:01 – Updated: 2026-05-22 16:59
VLAI
EPSS
VEX
Title
Invoking duplicate attributes can cause XSS in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
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CVE-2026-25681 (GCVE-0-2026-25681)
Vulnerability from cvelistv5 – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:46
VLAI
EPSS
VEX
Title
Invoking incorrect handling of character references in DOCTYPE nodes in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
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CVE-2026-25680 (GCVE-0-2026-25680)
Vulnerability from cvelistv5 – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:00
VLAI
EPSS
VEX
Title
Invoking denial of service when parsing arbitrary HTML in golang.org/x/net/html
Summary
Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
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CVE-2026-42502 (GCVE-0-2026-42502)
Vulnerability from cvelistv5 – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:17
VLAI
EPSS
VEX
Title
Invoking incorrect handling of HTML elements in foreign content in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
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CVE-2026-42506 (GCVE-0-2026-42506)
Vulnerability from cvelistv5 – Published: 2026-05-22 15:01 – Updated: 2026-05-22 17:45
VLAI
EPSS
VEX
Title
Invoking incorrect handling of namespaced elements in foreign content in golang.org/x/net/html
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.55.0
(semver)
|
Credits
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CVE-2025-58190 (GCVE-0-2025-58190)
Vulnerability from cvelistv5 – Published: 2026-02-05 17:48 – Updated: 2026-02-12 15:22
VLAI
EPSS
VEX
Title
Infinite parsing loop in golang.org/x/net
Summary
The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-835 - Loop with Unreachable Exit Condition
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.45.0
(semver)
|
Credits
{
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"url": "https://go.dev/cl/709875"
},
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"url": "https://pkg.go.dev/vuln/GO-2026-4441"
}
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CVE-2025-47911 (GCVE-0-2025-47911)
Vulnerability from cvelistv5 – Published: 2026-02-05 17:48 – Updated: 2026-02-12 15:23
VLAI
EPSS
VEX
Title
Quadratic parsing complexity in golang.org/x/net/html
Summary
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.45.0
(semver)
|
Credits
{
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"attackVector": "NETWORK",
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"name": "parser.parse"
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{
"name": "Parse"
},
{
"name": "ParseFragment"
},
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"name": "ParseFragmentWithOptions"
},
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}
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"value": "Guido Vranken"
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CVE-2025-22872 (GCVE-0-2025-22872)
Vulnerability from cvelistv5 – Published: 2025-04-16 17:13 – Updated: 2025-05-16 23:03
VLAI
EPSS
VEX
Title
Incorrect Neutralization of Input During Web Page Generation in x/net in golang.org/x/net
Summary
The tokenizer incorrectly interprets tags with unquoted attribute values that end with a solidus character (/) as self-closing. When directly using Tokenizer, this can result in such tags incorrectly being marked as self-closing, and when using the Parse functions, this can result in content following such tags as being placed in the wrong scope during DOM construction, but only when tags are in foreign content (e.g. <math>, <svg>, etc contexts).
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.38.0
(semver)
|
Credits
{
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"scope": "CHANGED",
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{
"url": "https://security.netapp.com/advisory/ntap-20250516-0007/"
}
],
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
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"name": "Tokenizer.readStartTag"
},
{
"name": "Parse"
},
{
"name": "ParseFragment"
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"name": "ParseWithOptions"
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"value": "Sean Ng (https://ensy.zip)"
}
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}
],
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"lang": "en"
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}
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"url": "https://go.dev/issue/73070"
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"url": "https://groups.google.com/g/golang-announce/c/ezSKR9vqbqA"
},
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CVE-2024-45338 (GCVE-0-2024-45338)
Vulnerability from cvelistv5 – Published: 2024-12-18 20:38 – Updated: 2025-02-21 18:03
VLAI
EPSS
VEX
Title
Non-linear parsing of case-insensitive content in golang.org/x/net/html
Summary
An attacker can craft an input to the Parse functions that would be processed non-linearly with respect to its length, resulting in extremely slow parsing. This could cause a denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.33.0
(semver)
|
Credits
{
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{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
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"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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],
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"timestamp": "2024-12-31T19:51:42.228627Z",
"version": "2.0.3"
},
"type": "ssvc"
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],
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{
"cweId": "CWE-1333",
"description": "CWE-1333 Inefficient Regular Expression Complexity",
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"type": "CWE"
}
]
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],
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"title": "CISA ADP Vulnrichment"
},
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}
],
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/net/html",
"product": "golang.org/x/net/html",
"programRoutines": [
{
"name": "parseDoctype"
},
{
"name": "htmlIntegrationPoint"
},
{
"name": "inTableIM"
},
{
"name": "inBodyIM"
},
{
"name": "Parse"
},
{
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},
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"name": "ParseWithOptions"
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}
],
"problemTypes": [
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"description": "CWE-405: Asymmetric Resource Consumption (Amplification)",
"lang": "en"
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}
],
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CVE-2023-3978 (GCVE-0-2023-3978)
Vulnerability from cvelistv5 – Published: 2023-08-02 19:48 – Updated: 2024-09-27 21:57
VLAI
EPSS
VEX
Title
Improper rendering of text nodes in golang.org/x/net/html
Summary
Text nodes not in the HTML namespace are incorrectly literally rendered, causing text which should be escaped to not be. This could lead to an XSS attack.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/html |
Affected:
0 , < 0.13.0
(semver)
|
{
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