CVE-2026-61795 (GCVE-0-2026-61795)
Vulnerability from cvelistv5
Published
2026-09-18 16:31
Modified
2026-09-21 20:49
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-697 - Incorrect Comparison
Summary
Capsule is a multi-tenancy and policy-based framework for Kubernetes. From 0.13.0 until 0.13.7, hostnameRegexHandler.OnUpdate in internal/webhook/tenant/validation/hostname_regex.go reverses the new and old Tenant parameters and validates the previous AllowedHostnames.Regex instead of the submitted value. A cluster administrator can therefore store a malformed AllowedHostnames.Regex after the webhook accepts the update based on stale valid state. Subsequent Ingress creation or update reaches validate_hostnames.go, which evaluates the malformed pattern, ignores the regular-expression error, and treats every hostname as unmatched, blocking Ingress operations for the affected tenant until an administrator repairs the Tenant configuration. This issue is fixed in version 0.13.7.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| projectcapsule | capsule |
Version: >= 0.13.0, < 0.13.7 |
{
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"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-61795",
"options": [
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"Exploitation": "none"
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{
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-18T19:30:32.778857Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2026-09-21T20:49:59.055Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
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"cna": {
"affected": [
{
"product": "capsule",
"vendor": "projectcapsule",
"versions": [
{
"status": "affected",
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}
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}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.8,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
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"description": "CWE-697: Incorrect Comparison",
"lang": "en",
"type": "CWE"
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"providerMetadata": {
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"shortName": "GitHub_M"
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"references": [
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"tags": [
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],
"url": "https://github.com/projectcapsule/capsule/security/advisories/GHSA-f94q-w3w8-cj67"
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{
"name": "https://github.com/projectcapsule/capsule/pull/1983",
"tags": [
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{
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"tags": [
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{
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"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/projectcapsule/capsule/releases/tag/v0.13.7"
}
],
"source": {
"advisory": "GHSA-f94q-w3w8-cj67",
"discovery": "UNKNOWN"
},
"title": "Capsule: hostnameRegexHandler.OnUpdate validates stale (old) Tenant regex, allowing invalid AllowedHostnames regex to bypass webhook validation"
}
},
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"dateReserved": "2026-07-10T20:06:05.617Z",
"dateUpdated": "2026-09-21T20:49:59.055Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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