RHSA-2026:11686
Vulnerability from csaf_redhat - Published: 2026-04-29 12:06 - Updated: 2026-04-29 12:07Summary
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 2.6.15
Severity
Important
Notes
Topic: Red Hat OpenShift Service Mesh 2.6.15
This update has a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: Red Hat OpenShift Service Mesh 2.6.15, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application.
Security Fix(es):
* proxyv2-rhel9: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid.
7.5 (High)
Vendor Fix
See Red Hat OpenShift Service Mesh 2.6.15 documentation at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/service_mesh/service-mesh-2-x
https://access.redhat.com/errata/RHSA-2026:11686
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
References
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"text": "The Go standard library function net/url.Parse insufficiently validated the host/authority component and accepted some invalid URLs by effectively treating garbage before an IP-literal as ignorable. The function should have rejected this as invalid.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "net/url: Incorrect parsing of IPv6 host literals in net/url",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
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"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:29c42cfcd4220a9c15b4e0561bef8d9dcb452e5c476a2cb28aec09992bfa0d25_ppc64le",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:aab01c4a2de8d891371dc0d421ec3b81906c3c716db09a432520e7e3b48d42bf_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:c1d5aaf421e33a7e1997f15749aebd3d66e19f22db3123fc870231732774b21a_s390x"
],
"known_not_affected": [
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"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:98a890fb00e9f8d11c18ac02af640e12cc9bd78a70a91632c9944e58f1ba6872_s390x",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:a0578780579fcd74c269dca0087dd97382e45bc684d99c362c99922849efd2e1_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:a14db46bfb9ad3dc127b3ab8d6b3b4bb9fe30abe9f5b86b56054b9523af168e0_arm64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-25679"
},
{
"category": "external",
"summary": "RHBZ#2445356",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445356"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-25679",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-25679"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-25679",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25679"
},
{
"category": "external",
"summary": "https://go.dev/cl/752180",
"url": "https://go.dev/cl/752180"
},
{
"category": "external",
"summary": "https://go.dev/issue/77578",
"url": "https://go.dev/issue/77578"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk",
"url": "https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4601",
"url": "https://pkg.go.dev/vuln/GO-2026-4601"
}
],
"release_date": "2026-03-06T21:28:14.211000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-04-29T12:06:04+00:00",
"details": "See Red Hat OpenShift Service Mesh 2.6.15 documentation at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/service_mesh/service-mesh-2-x",
"product_ids": [
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:218504ae4ddd13908f1b5995003f23324745ed347ab2e216ed8a24807310bfcd_arm64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:29c42cfcd4220a9c15b4e0561bef8d9dcb452e5c476a2cb28aec09992bfa0d25_ppc64le",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:aab01c4a2de8d891371dc0d421ec3b81906c3c716db09a432520e7e3b48d42bf_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:c1d5aaf421e33a7e1997f15749aebd3d66e19f22db3123fc870231732774b21a_s390x"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:11686"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
"product_ids": [
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:6cb381af9923aee441763f5338912ba6a53aec681b42d794ee40c5b054c7c3b3_ppc64le",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:98a890fb00e9f8d11c18ac02af640e12cc9bd78a70a91632c9944e58f1ba6872_s390x",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:a0578780579fcd74c269dca0087dd97382e45bc684d99c362c99922849efd2e1_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:a14db46bfb9ad3dc127b3ab8d6b3b4bb9fe30abe9f5b86b56054b9523af168e0_arm64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:218504ae4ddd13908f1b5995003f23324745ed347ab2e216ed8a24807310bfcd_arm64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:29c42cfcd4220a9c15b4e0561bef8d9dcb452e5c476a2cb28aec09992bfa0d25_ppc64le",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:aab01c4a2de8d891371dc0d421ec3b81906c3c716db09a432520e7e3b48d42bf_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:c1d5aaf421e33a7e1997f15749aebd3d66e19f22db3123fc870231732774b21a_s390x"
]
}
],
"scores": [
{
"cvss_v3": {
"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"
},
"products": [
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"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:98a890fb00e9f8d11c18ac02af640e12cc9bd78a70a91632c9944e58f1ba6872_s390x",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:a0578780579fcd74c269dca0087dd97382e45bc684d99c362c99922849efd2e1_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/istio-must-gather-rhel9@sha256:a14db46bfb9ad3dc127b3ab8d6b3b4bb9fe30abe9f5b86b56054b9523af168e0_arm64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:218504ae4ddd13908f1b5995003f23324745ed347ab2e216ed8a24807310bfcd_arm64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:29c42cfcd4220a9c15b4e0561bef8d9dcb452e5c476a2cb28aec09992bfa0d25_ppc64le",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:aab01c4a2de8d891371dc0d421ec3b81906c3c716db09a432520e7e3b48d42bf_amd64",
"Red Hat OpenShift Service Mesh 2.6:registry.redhat.io/openshift-service-mesh/proxyv2-rhel9@sha256:c1d5aaf421e33a7e1997f15749aebd3d66e19f22db3123fc870231732774b21a_s390x"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "net/url: Incorrect parsing of IPv6 host literals in net/url"
}
]
}
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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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