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Vulnerability from cleanstart
Published
2026-09-15 00:55
Modified
2026-09-14 12:47
Summary
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection
Details
Multiple security vulnerabilities affect the helm package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.
Severity
9.8 (Critical)
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "helm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.2.4-r2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the helm package. Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-VR06102",
"modified": "2026-09-14T12:47:14Z",
"published": "2026-09-15T00:55:40.811517Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-VR06102.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42504"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-46600"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-50163"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56852"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56854"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56855"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-78662"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46600"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50163"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56852"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56854"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56855"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-78662"
}
],
"related": [],
"schema_version": "1.7.3",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection",
"upstream": [
"CVE-2026-42504",
"CVE-2026-46600",
"CVE-2026-50163",
"CVE-2026-56852",
"CVE-2026-56854",
"CVE-2026-56855",
"CVE-2026-78662"
]
}
CVE-2026-42504 (GCVE-0-2026-42504)
Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-09-10 16:34
VLAI
EPSS
VEX
Title
Quadratic complexity in WordDecoder.DecodeHeader in mime
Summary
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 14:05 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | mime |
Affected:
0 , < 1.25.11
(semver)
Affected: 1.26.0-0 , < 1.26.4 (semver) |
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"credits": [
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},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5038"
}
],
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}
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CVE-2026-46600 (GCVE-0-2026-46600)
Vulnerability from cvelistv5 – Published: 2026-07-21 19:18 – Updated: 2026-08-14 15:46
VLAI
EPSS
VEX
Title
Parsing an invalid SVCB or HTTPS RR can panic in golang.org/x/net/dns/dnsmessage
Summary
Parsing an invalid SVCB or HTTPS RR can panic when the size of a parameter value overflows the message buffer.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 15:00 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
1.26.0-0 , < 1.26.6
(semver)
Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
|
| golang.org/x/net | golang.org/x/net/dns/dnsmessage |
Affected:
0 , < 0.56.0
(semver)
|
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"packageName": "net",
"product": "net",
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"name": "cgoResSearch"
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{
"name": "Resolver.LookupCNAME"
}
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"name": "Message.Unpack"
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},
{
"name": "Parser.AllAdditionals"
},
{
"name": "Parser.AllAnswers"
},
{
"name": "Parser.AllAuthorities"
},
{
"name": "Parser.Answer"
},
{
"name": "Parser.Authority"
},
{
"name": "Parser.HTTPSResource"
},
{
"name": "Parser.SVCBResource"
}
],
"vendor": "golang.org/x/net",
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"status": "affected",
"version": "0",
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},
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"url": "https://pkg.go.dev/vuln/GO-2026-5942"
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],
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CVE-2026-50163 (GCVE-0-2026-50163)
Vulnerability from cvelistv5 – Published: 2026-07-17 19:36 – Updated: 2026-07-20 15:01
VLAI
EPSS
VEX
Title
oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction
Summary
oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, ensureLinkPath in content/file/utils.go:262-275 validates a hardlink target relative to the extract base but returns the unresolved target, causing os.Link("victim.secret", "<extract_base>/payload.tar.gz/evil_cwd_link") to resolve header.Linkname against the process current working directory for a Typeflag=TypeLink entry such as Name=payload.tar.gz/evil_cwd_link and Linkname="victim.secret" with io.deis.oras.content.unpack: "true", which can expose or tamper with files such as .env, .git/config, .aws/credentials, and ~/.ssh/config. This issue is fixed in version 2.6.2.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 15:00 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/oras-project/oras-go/security/… | x_refsource_CONFIRM |
| https://github.com/oras-project/oras-go/pull/1232 | x_refsource_MISC |
| https://github.com/oras-project/oras-go/commit/c4… | x_refsource_MISC |
| https://github.com/oras-project/oras-go/releases/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| oras-project | oras-go |
Affected:
< 2.6.2
|
{
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/oras-project/oras-go/releases/tag/v2.6.2"
}
],
"source": {
"advisory": "GHSA-fxhp-mv3v-67qp",
"discovery": "UNKNOWN"
},
"title": "oras-go: Hardlink entry with relative Linkname escapes extract dir via process CWD resolution in `oras-go` tar extraction"
}
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"cveMetadata": {
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CVE-2026-56852 (GCVE-0-2026-56852)
Vulnerability from cvelistv5 – Published: 2026-07-21 19:18 – Updated: 2026-08-10 22:57
VLAI
EPSS
VEX
Title
Infinite loop on invalid input in golang.org/x/text
Summary
A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 13:26 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/text | golang.org/x/text/unicode/norm |
Affected:
0 , < 0.39.0
(semver)
|
Credits
{
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{
"metrics": [
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"integrityImpact": "NONE",
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"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
}
},
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"dateUpdated": "2026-07-23T13:26:20.232Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/text/unicode/norm",
"product": "golang.org/x/text/unicode/norm",
"programRoutines": [
{
"name": "nextComposed"
},
{
"name": "Form.Append"
},
{
"name": "Form.AppendString"
},
{
"name": "Form.Bytes"
},
{
"name": "Form.FirstBoundary"
},
{
"name": "Form.FirstBoundaryInString"
},
{
"name": "Form.IsNormal"
},
{
"name": "Form.IsNormalString"
},
{
"name": "Form.LastBoundary"
},
{
"name": "Form.NextBoundary"
},
{
"name": "Form.NextBoundaryInString"
},
{
"name": "Form.Properties"
},
{
"name": "Form.PropertiesString"
},
{
"name": "Form.QuickSpan"
},
{
"name": "Form.QuickSpanString"
},
{
"name": "Form.Span"
},
{
"name": "Form.SpanString"
},
{
"name": "Form.String"
},
{
"name": "Form.Transform"
},
{
"name": "Iter.Init"
},
{
"name": "Iter.InitString"
},
{
"name": "Iter.Next"
},
{
"name": "Iter.Seek"
},
{
"name": "normReader.Read"
},
{
"name": "normWriter.Write"
}
],
"vendor": "golang.org/x/text",
"versions": [
{
"lessThan": "0.39.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Viky Choi (\"vikychoi\" on GitHub)"
}
],
"descriptions": [
{
"lang": "en",
"value": "A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-10T22:57:54.703Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/80142"
},
{
"url": "https://go.dev/cl/794100"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5970"
}
],
"title": "Infinite loop on invalid input in golang.org/x/text"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-56852",
"datePublished": "2026-07-21T19:18:59.951Z",
"dateReserved": "2026-06-23T15:10:49.352Z",
"dateUpdated": "2026-08-10T22:57:54.703Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-56854 (GCVE-0-2026-56854)
Vulnerability from cvelistv5 – Published: 2026-08-28 15:14 – Updated: 2026-08-28 20:17
VLAI
EPSS
VEX
Title
Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh
Summary
The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 20:16 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh |
Affected:
0 , < 0.55.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-56854",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-28T20:16:07.248758Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863 Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-28T20:17:17.397Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/crypto/ssh",
"product": "golang.org/x/crypto/ssh",
"programRoutines": [
{
"name": "connection.serverAuthenticate"
},
{
"name": "NewServerConn"
}
],
"vendor": "golang.org/x/crypto",
"versions": [
{
"lessThan": "0.55.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Longwei Wang (@gn00295120)"
}
],
"descriptions": [
{
"lang": "en",
"value": "The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client\u0027s remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-863: Incorrect Authorization",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-28T15:14:26.918Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/80213"
},
{
"url": "https://go.dev/cl/797040"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6303"
}
],
"title": "Source-address critical option not enforced for non-public-key auth callbacks in golang.org/x/crypto/ssh"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-56854",
"datePublished": "2026-08-28T15:14:26.918Z",
"dateReserved": "2026-06-23T15:10:49.353Z",
"dateUpdated": "2026-08-28T20:17:17.397Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-56855 (GCVE-0-2026-56855)
Vulnerability from cvelistv5 – Published: 2026-09-02 19:37 – Updated: 2026-09-03 14:14
VLAI
EPSS
VEX
Title
Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh
Summary
Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 14:13 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh |
Affected:
0 , < 0.56.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"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:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-56855",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-03T14:13:54.397574Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-03T14:14:40.169Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/crypto/ssh",
"product": "golang.org/x/crypto/ssh",
"programRoutines": [
{
"name": "channel.handlePacket"
},
{
"name": "Dial"
},
{
"name": "NewClientConn"
},
{
"name": "NewControlClientConn"
},
{
"name": "NewServerConn"
}
],
"vendor": "golang.org/x/crypto",
"versions": [
{
"lessThan": "0.56.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Will Mortensen"
}
],
"descriptions": [
{
"lang": "en",
"value": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-02T19:37:05.807Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/81317"
},
{
"url": "https://go.dev/cl/826524"
},
{
"url": "https://groups.google.com/g/golang-announce/c/1y3fb2np35U"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6355"
}
],
"title": "Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-56855",
"datePublished": "2026-09-02T19:37:05.807Z",
"dateReserved": "2026-06-23T15:10:49.353Z",
"dateUpdated": "2026-09-03T14:14:40.169Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-78662 (GCVE-0-2026-78662)
Vulnerability from cvelistv5 – Published: 2026-09-02 19:37 – Updated: 2026-09-03 13:20
VLAI
EPSS
VEX
Title
Prevent DoS on deadlocked undecided channel in golang.org/x/crypto/ssh
Summary
Previously, a channel registered in the mux's chanList is not usable until it is established. A malicious peer was able flood the channel's incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:19 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/crypto | golang.org/x/crypto/ssh |
Affected:
0 , < 0.56.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-78662",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-03T13:19:47.340520Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-03T13:20:12.263Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "golang.org/x/crypto/ssh",
"product": "golang.org/x/crypto/ssh",
"programRoutines": [
{
"name": "channel.handlePacket"
},
{
"name": "channel.responseMessageReceived"
},
{
"name": "channel.Accept"
},
{
"name": "Dial"
},
{
"name": "NewClientConn"
},
{
"name": "NewControlClientConn"
},
{
"name": "NewServerConn"
}
],
"vendor": "golang.org/x/crypto",
"versions": [
{
"lessThan": "0.56.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Will Mortensen"
}
],
"descriptions": [
{
"lang": "en",
"value": "Previously, a channel registered in the mux\u0027s chanList is not usable until it is established. A malicious peer was able flood the channel\u0027s incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-770: Allocation of Resources Without Limits or Throttling",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-02T19:37:05.741Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/issue/81316"
},
{
"url": "https://go.dev/cl/826504"
},
{
"url": "https://groups.google.com/g/golang-announce/c/1y3fb2np35U"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6354"
}
],
"title": "Prevent DoS on deadlocked undecided channel in golang.org/x/crypto/ssh"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2026-78662",
"datePublished": "2026-09-02T19:37:05.741Z",
"dateReserved": "2026-08-24T23:36:15.738Z",
"dateUpdated": "2026-09-03T13:20:12.263Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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