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Vulnerability from cleanstart
Published
2026-09-10 03:04
Modified
2026-09-09 04:22
Summary
Previously, resolving relative paths containing parent directory ('
Details
Multiple security vulnerabilities affect the nats-streaming package. Previously, resolving relative paths containing parent directory ('. See references for individual vulnerability details.
Severity
9.8 (Critical)
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "nats-streaming"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.24.6-r5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the nats-streaming package. Previously, resolving relative paths containing parent directory (\u0027. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-FD87409",
"modified": "2026-09-09T04:22:04Z",
"published": "2026-09-10T03:04:43.115167Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-FD87409.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-33818"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39822"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42504"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42505"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-46600"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56853"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56858"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-56860"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-259r-337f-4rfw"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33818"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39822"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42505"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46600"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56853"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56858"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56860"
}
],
"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, resolving relative paths containing parent directory (\u0027",
"upstream": [
"CVE-2026-33818",
"CVE-2026-39822",
"CVE-2026-42504",
"CVE-2026-42505",
"CVE-2026-46600",
"CVE-2026-56853",
"CVE-2026-56858",
"CVE-2026-56860",
"ghsa-259r-337f-4rfw"
]
}
CVE-2026-33818 (GCVE-0-2026-33818)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:58 – Updated: 2026-09-10 16:34
VLAI
EPSS
VEX
Title
Enforce maximum recursion depth in encoding/asn1
Summary
Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 15:11 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | encoding/asn1 |
Affected:
0 , < 1.25.13
(semver)
Affected: 1.26.0-0 , < 1.26.6 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
{
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
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"providerMetadata": {
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"cna": {
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "encoding/asn1",
"product": "encoding/asn1",
"programRoutines": [
{
"name": "parseSequenceOf"
},
{
"name": "parseField"
},
{
"name": "UnmarshalWithParams"
},
{
"name": "Unmarshal"
}
],
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{
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],
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{
"lang": "en",
"value": "Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures."
}
],
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},
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{
"url": "https://go.dev/issue/80405"
},
{
"url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI"
},
{
"url": "https://go.dev/cl/814980"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5972"
}
],
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}
},
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},
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"dataVersion": "5.2"
}
CVE-2026-39822 (GCVE-0-2026-39822)
Vulnerability from cvelistv5 – Published: 2026-07-08 15:46 – Updated: 2026-07-08 19:39
VLAI
EPSS
VEX
Title
Root escape via symlink plus trailing slash in os
Summary
On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 18:06 UTC
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | os |
Affected:
0 , < 1.25.12
(semver)
Affected: 1.26.0-0 , < 1.26.5 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.2 (semver) |
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},
"title": "CISA ADP Vulnrichment"
}
],
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "os",
"product": "os",
"programRoutines": [
{
"name": "rootOpenFileNolog"
},
{
"name": "openRootInRoot"
},
{
"name": "OpenInRoot"
},
{
"name": "Root.Create"
},
{
"name": "Root.Open"
},
{
"name": "Root.OpenFile"
},
{
"name": "Root.OpenRoot"
},
{
"name": "Root.ReadFile"
},
{
"name": "Root.WriteFile"
},
{
"name": "rootFS.Open"
},
{
"name": "rootFS.ReadDir"
},
{
"name": "rootFS.ReadFile"
}
],
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"version": "1.27.0-0",
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]
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],
"credits": [
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"value": "Mundur (https://github.com/M0nd0R)"
}
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}
],
"problemTypes": [
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},
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"url": "https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc"
},
{
"url": "https://go.dev/cl/797880"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4970"
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],
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}
},
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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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"attackVector": "NETWORK",
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"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"
}
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"timestamp": "2026-06-03T14:05:39.682615Z",
"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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},
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}
],
"cna": {
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{
"collectionURL": "https://pkg.go.dev",
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"packageName": "mime",
"product": "mime",
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"name": "WordDecoder.DecodeHeader"
}
],
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{
"lessThan": "1.25.11",
"status": "affected",
"version": "0",
"versionType": "semver"
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"status": "affected",
"version": "1.26.0-0",
"versionType": "semver"
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]
}
],
"credits": [
{
"lang": "en",
"value": "p4p3r (https://hackerone.com/p4p3r_hak)"
}
],
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"url": "https://go.dev/cl/774481"
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{
"url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5038"
}
],
"title": "Quadratic complexity in WordDecoder.DecodeHeader in mime"
}
},
"cveMetadata": {
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"datePublished": "2026-06-02T22:01:37.219Z",
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CVE-2026-42505 (GCVE-0-2026-42505)
Vulnerability from cvelistv5 – Published: 2026-07-08 15:46 – Updated: 2026-07-08 19:38
VLAI
EPSS
VEX
Title
Invoking Encrypted Client Hello privacy leak in crypto/tls
Summary
Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 18:03 UTC
CWE
- CWE-201 - Insertion of Sensitive Information Into Sent Data
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/tls |
Affected:
0 , < 1.25.12
(semver)
Affected: 1.26.0-0 , < 1.26.5 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.2 (semver) |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
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}
],
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"timestamp": "2026-07-08T18:03:53.821942Z",
"version": "2.0.3"
},
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}
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}
]
}
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"dateUpdated": "2026-07-08T19:38:17.603Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "crypto/tls",
"product": "crypto/tls",
"programRoutines": [
{
"name": "clientHelloMsg.marshalMsg"
},
{
"name": "Conn.Handshake"
},
{
"name": "Conn.HandshakeContext"
},
{
"name": "Conn.Read"
},
{
"name": "Conn.Write"
},
{
"name": "Dial"
},
{
"name": "DialWithDialer"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "QUICConn.HandleData"
},
{
"name": "QUICConn.SendSessionTicket"
},
{
"name": "QUICConn.Start"
}
],
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]
}
],
"credits": [
{
"lang": "en",
"value": "Coia Prant (github.com/rbqvq)"
}
],
"descriptions": [
{
"lang": "en",
"value": "Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a disclosure of pre-shared key identities in the unencrypted client hello."
}
],
"problemTypes": [
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],
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},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5856"
}
],
"title": "Invoking Encrypted Client Hello privacy leak in crypto/tls"
}
},
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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",
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{
"name": "Parser.AllAnswers"
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{
"name": "Parser.AllAuthorities"
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{
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"name": "Parser.HTTPSResource"
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{
"name": "Parser.SVCBResource"
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"versions": [
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CVE-2026-56853 (GCVE-0-2026-56853)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:58 – Updated: 2026-08-14 15:23
VLAI
EPSS
VEX
Title
Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http
Summary
When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 15:22 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/http |
Affected:
0 , < 1.25.13
(semver)
Affected: 1.26.0-0 , < 1.26.6 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
{
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"product": "net/http",
"programRoutines": [
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"name": "conn.readRequest"
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{
"name": "conn.serve"
},
{
"name": "ListenAndServe"
},
{
"name": "ListenAndServeTLS"
},
{
"name": "Serve"
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{
"name": "ServeTLS"
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{
"name": "Server.ListenAndServe"
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{
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},
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"url": "https://pkg.go.dev/vuln/GO-2026-6089"
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},
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CVE-2026-56858 (GCVE-0-2026-56858)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:58 – Updated: 2026-08-14 15:32
VLAI
EPSS
VEX
Title
Fix Javascript regexp context tracking in html/template
Summary
Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 15:31 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.13
(semver)
Affected: 1.26.0-0 , < 1.26.6 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
Credits
{
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CVE-2026-56860 (GCVE-0-2026-56860)
Vulnerability from cvelistv5 – Published: 2026-08-13 21:58 – Updated: 2026-08-14 16:14
VLAI
EPSS
VEX
Title
Avoid quadratic complexity in resolvePath in net/url
Summary
Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead. Now, path resolution operates on a byte buffer using index-based backtracking for '..' segments, eliminating the quadratic time complexity and significantly reducing memory allocations.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 16:14 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/url |
Affected:
0 , < 1.25.13
(semver)
Affected: 1.26.0-0 , < 1.26.6 (semver) Affected: 1.27.0-0 , < 1.27.0-rc.3 (semver) |
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},
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"url": "https://groups.google.com/g/golang-announce/c/94pEornpRlI"
},
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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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