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2 vulnerabilities found for HAProxy Kubernetes Ingress Controller by HAProxy Technologies
CVE-2026-110354 (GCVE-0-2026-110354)
Vulnerability from nvd – Published: 2026-10-22 02:46 – Updated: 2026-10-22 19:10
VLAI
EPSS
VEX
Summary
HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worker-thread CPU exhaustion) via an HTTP/1.1 chunked request. Although the H1 multiplexer drains the request before closing the stream, the parser repeatedly re-processes the same bytes without making progress. The affected thread stays busy at 100% CPU after timeouts expire and after the client disconnects, and repeated requests can consume all worker threads until the process is restarted.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-22 13:43 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.haproxy.org/?p=haproxy.git;a=commit;h… | vendor-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| HAProxy | HAProxy |
Affected:
3.0.0 , < 3.0.30
(custom)
Affected: 3.2.0 , < 3.2.26 (custom) Affected: 3.3.0 , < 3.3.17 (custom) Affected: 3.4.0 , < 3.4.6 (custom) Affected: 3.5-dev , < 3.5-dev9 (custom) |
|
| HAProxy | HAProxy Enterprise Edition |
Affected:
3.0r1 , < 3.0r1-362.1441
(custom)
Affected: 3.2r1 , < 3.2r1-378.1259 (custom) Affected: 3.3r1 , < 3.3r1-377.1005 (custom) |
|
| HAProxy Technologies | HAProxy Kubernetes Ingress Controller |
Affected:
3.2.0 , < 3.2.17
(custom)
|
|
| HAProxy Technologies | Kubernetes Ingress Controller Enterprise |
Affected:
3.2.0 , < 3.2.17-ee1
(custom)
Affected: 3.0 , < 3.0.16-ee17 (custom) Affected: 1.11 , < 1.11.14-ee11 (custom) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-110354",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-22T13:43:28.678756Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-22T19:10:34.563Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"mux-h1"
],
"product": "HAProxy",
"programFiles": [
"src/h1_htx.c"
],
"programRoutines": [
{
"name": "h1_parse_msg_data"
}
],
"repo": "https://git.haproxy.org/git/haproxy.git",
"vendor": "HAProxy",
"versions": [
{
"lessThan": "3.0.30",
"status": "affected",
"version": "3.0.0",
"versionType": "custom"
},
{
"lessThan": "3.2.26",
"status": "affected",
"version": "3.2.0",
"versionType": "custom"
},
{
"lessThan": "3.3.17",
"status": "affected",
"version": "3.3.0",
"versionType": "custom"
},
{
"lessThan": "3.4.6",
"status": "affected",
"version": "3.4.0",
"versionType": "custom"
},
{
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"status": "affected",
"version": "3.5-dev",
"versionType": "custom"
}
]
},
{
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"product": "HAProxy Enterprise Edition",
"vendor": "HAProxy",
"versions": [
{
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"status": "affected",
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"versionType": "custom"
},
{
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"versionType": "custom"
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{
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"status": "affected",
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}
]
},
{
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"vendor": "HAProxy Technologies",
"versions": [
{
"lessThan": "3.2.17-ee1",
"status": "affected",
"version": "3.2.0",
"versionType": "custom"
},
{
"lessThan": "3.0.16-ee17",
"status": "affected",
"version": "3.0",
"versionType": "custom"
},
{
"lessThan": "1.11.14-ee11",
"status": "affected",
"version": "1.11",
"versionType": "custom"
}
]
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}
],
"metrics": [
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"attackComplexity": "LOW",
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}
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"state": "PUBLISHED"
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CVE-2026-110354 (GCVE-0-2026-110354)
Vulnerability from cvelistv5 – Published: 2026-10-22 02:46 – Updated: 2026-10-22 19:10
VLAI
EPSS
VEX
Summary
HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worker-thread CPU exhaustion) via an HTTP/1.1 chunked request. Although the H1 multiplexer drains the request before closing the stream, the parser repeatedly re-processes the same bytes without making progress. The affected thread stays busy at 100% CPU after timeouts expire and after the client disconnects, and repeated requests can consume all worker threads until the process is restarted.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-22 13:43 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://git.haproxy.org/?p=haproxy.git;a=commit;h… | vendor-advisory |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| HAProxy | HAProxy |
Affected:
3.0.0 , < 3.0.30
(custom)
Affected: 3.2.0 , < 3.2.26 (custom) Affected: 3.3.0 , < 3.3.17 (custom) Affected: 3.4.0 , < 3.4.6 (custom) Affected: 3.5-dev , < 3.5-dev9 (custom) |
|
| HAProxy | HAProxy Enterprise Edition |
Affected:
3.0r1 , < 3.0r1-362.1441
(custom)
Affected: 3.2r1 , < 3.2r1-378.1259 (custom) Affected: 3.3r1 , < 3.3r1-377.1005 (custom) |
|
| HAProxy Technologies | HAProxy Kubernetes Ingress Controller |
Affected:
3.2.0 , < 3.2.17
(custom)
|
|
| HAProxy Technologies | Kubernetes Ingress Controller Enterprise |
Affected:
3.2.0 , < 3.2.17-ee1
(custom)
Affected: 3.0 , < 3.0.16-ee17 (custom) Affected: 1.11 , < 1.11.14-ee11 (custom) |
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"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-110354",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-22T13:43:28.678756Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-22T19:10:34.563Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"mux-h1"
],
"product": "HAProxy",
"programFiles": [
"src/h1_htx.c"
],
"programRoutines": [
{
"name": "h1_parse_msg_data"
}
],
"repo": "https://git.haproxy.org/git/haproxy.git",
"vendor": "HAProxy",
"versions": [
{
"lessThan": "3.0.30",
"status": "affected",
"version": "3.0.0",
"versionType": "custom"
},
{
"lessThan": "3.2.26",
"status": "affected",
"version": "3.2.0",
"versionType": "custom"
},
{
"lessThan": "3.3.17",
"status": "affected",
"version": "3.3.0",
"versionType": "custom"
},
{
"lessThan": "3.4.6",
"status": "affected",
"version": "3.4.0",
"versionType": "custom"
},
{
"lessThan": "3.5-dev9",
"status": "affected",
"version": "3.5-dev",
"versionType": "custom"
}
]
},
{
"defaultStatus": "unaffected",
"product": "HAProxy Enterprise Edition",
"vendor": "HAProxy",
"versions": [
{
"lessThan": "3.0r1-362.1441",
"status": "affected",
"version": "3.0r1",
"versionType": "custom"
},
{
"lessThan": "3.2r1-378.1259",
"status": "affected",
"version": "3.2r1",
"versionType": "custom"
},
{
"lessThan": "3.3r1-377.1005",
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},
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"version": "3.0",
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},
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}
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"attackVector": "NETWORK",
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