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6 vulnerabilities found for net by Go standard library
CVE-2026-39836 (GCVE-0-2026-39836)
Vulnerability from nvd – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI
Title
Panic in Dial and LookupPort when handling NUL byte on Windows in net
Summary
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-248 - Uncaught Exception
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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"programRoutines": [
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"name": "Resolver.lookupTXT"
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"name": "DialTimeout"
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"name": "Dialer.DialContext"
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"name": "Listen"
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{
"name": "ListenConfig.Listen"
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{
"name": "ListenConfig.ListenPacket"
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{
"name": "ListenPacket"
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{
"name": "LookupAddr"
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{
"name": "LookupCNAME"
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{
"name": "LookupHost"
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{
"name": "LookupIP"
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{
"name": "LookupMX"
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"name": "LookupNS"
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"name": "LookupPort"
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"name": "LookupSRV"
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{
"name": "ResolveIPAddr"
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{
"name": "ResolveTCPAddr"
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{
"name": "ResolveUDPAddr"
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{
"name": "Resolver.LookupAddr"
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{
"name": "Resolver.LookupCNAME"
},
{
"name": "Resolver.LookupHost"
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{
"name": "Resolver.LookupIP"
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{
"name": "Resolver.LookupIPAddr"
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{
"name": "Resolver.LookupMX"
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{
"name": "Resolver.LookupNS"
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{
"name": "Resolver.LookupNetIP"
},
{
"name": "Resolver.LookupPort"
},
{
"name": "Resolver.LookupSRV"
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{
"name": "Resolver.LookupTXT"
}
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"url": "https://go.dev/issue/79006"
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{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://go.dev/cl/775320"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4971"
}
],
"title": "Panic in Dial and LookupPort when handling NUL byte on Windows in net"
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CVE-2026-33811 (GCVE-0-2026-33811)
Vulnerability from nvd – Published: 2026-05-07 19:41 – Updated: 2026-07-01 12:05
VLAI
Title
Crash when handling long CNAME response in net
Summary
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
14 references
| URL | Tags |
|---|---|
| https://go.dev/issue/78803 | |
| https://go.dev/cl/767860 | |
| https://groups.google.com/g/golang-announce/c/qcC… | |
| https://pkg.go.dev/vuln/GO-2026-4981 | |
| https://access.redhat.com/security/cve/CVE-2026-33811 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2467822 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:33574 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23262 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23264 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33120 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33123 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33142 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33150 | vendor-advisoryx_refsource_REDHAT |
Impacted products
83 products
Credits
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CVE-2024-24788 (GCVE-0-2024-24788)
Vulnerability from nvd – Published: 2024-05-08 15:31 – Updated: 2025-02-13 17:40
VLAI
Title
Malformed DNS message can cause infinite loop in net
Summary
A malformed DNS message in response to a query can cause the Lookup functions to get stuck in an infinite loop.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE 400: Uncontrolled Resource Consumption
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
1.22.0-0 , < 1.22.3
(semver)
|
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CVE-2026-33811 (GCVE-0-2026-33811)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-07-01 12:05
VLAI
Title
Crash when handling long CNAME response in net
Summary
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
14 references
| URL | Tags |
|---|---|
| https://go.dev/issue/78803 | |
| https://go.dev/cl/767860 | |
| https://groups.google.com/g/golang-announce/c/qcC… | |
| https://pkg.go.dev/vuln/GO-2026-4981 | |
| https://access.redhat.com/security/cve/CVE-2026-33811 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2467822 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:33574 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23262 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23264 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33120 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33123 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33142 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33150 | vendor-advisoryx_refsource_REDHAT |
Impacted products
83 products
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CVE-2026-39836 (GCVE-0-2026-39836)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI
Title
Panic in Dial and LookupPort when handling NUL byte on Windows in net
Summary
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-248 - Uncaught Exception
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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"name": "Resolver.LookupSRV"
},
{
"name": "Resolver.LookupTXT"
}
],
"vendor": "Go standard library",
"versions": [
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"lessThan": "1.25.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.26.3",
"status": "affected",
"version": "1.26.0-0",
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}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0)."
}
],
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"description": "CWE-248: Uncaught Exception",
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},
{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://go.dev/cl/775320"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4971"
}
],
"title": "Panic in Dial and LookupPort when handling NUL byte on Windows in net"
}
},
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CVE-2024-24788 (GCVE-0-2024-24788)
Vulnerability from cvelistv5 – Published: 2024-05-08 15:31 – Updated: 2025-02-13 17:40
VLAI
Title
Malformed DNS message can cause infinite loop in net
Summary
A malformed DNS message in response to a query can cause the Lookup functions to get stuck in an infinite loop.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE 400: Uncontrolled Resource Consumption
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
1.22.0-0 , < 1.22.3
(semver)
|
Credits
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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{
"collectionURL": "https://pkg.go.dev",
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"packageName": "net",
"product": "net",
"programRoutines": [
{
"name": "extractExtendedRCode"
},
{
"name": "Dial"
},
{
"name": "DialTimeout"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "Listen"
},
{
"name": "ListenConfig.Listen"
},
{
"name": "ListenConfig.ListenPacket"
},
{
"name": "ListenPacket"
},
{
"name": "LookupAddr"
},
{
"name": "LookupCNAME"
},
{
"name": "LookupHost"
},
{
"name": "LookupIP"
},
{
"name": "LookupMX"
},
{
"name": "LookupNS"
},
{
"name": "LookupSRV"
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{
"name": "LookupTXT"
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{
"name": "ResolveIPAddr"
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{
"name": "ResolveTCPAddr"
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{
"name": "ResolveUDPAddr"
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{
"name": "Resolver.LookupAddr"
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{
"name": "Resolver.LookupCNAME"
},
{
"name": "Resolver.LookupHost"
},
{
"name": "Resolver.LookupIP"
},
{
"name": "Resolver.LookupIPAddr"
},
{
"name": "Resolver.LookupMX"
},
{
"name": "Resolver.LookupNS"
},
{
"name": "Resolver.LookupNetIP"
},
{
"name": "Resolver.LookupSRV"
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