Vulnerability-Lookup

OPENSUSE-SU-2026:10562-1

Vulnerability from csaf_opensuse - Published: 2026-04-16 00:00 - Updated: 2026-09-17 17:01

Summary

flannel-0.28.4-1.1 on GA media

Severity

Moderate

Notes

Title of the patch: flannel-0.28.4-1.1 on GA media

Description of the patch: These are all security issues fixed in the flannel-0.28.4-1.1 package on the GA media of openSUSE Tumbleweed.

Patchnames: openSUSE-Tumbleweed-2026-10562

CVE-2026-33413

8.6 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected products

Recommended 8 products

Product	Version	Remediation
Unresolved product id: openSUSE Tumbleweed:flannel-0:0.28.4-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-0:0.28.4-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-0:0.28.4-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-0:0.28.4-1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-k8s-yaml-0:0.28.4-1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-k8s-yaml-0:0.28.4-1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-k8s-yaml-0:0.28.4-1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:flannel-k8s-yaml-0:0.28.4-1.1.x86_64	—	Vendor Fix

Threats

Impact important

References

5 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://www.suse.com/security/cve/CVE-2026-33413/	self
https://www.suse.com/security/cve/CVE-2026-33413	external
https://bugzilla.suse.com/1260848	external

JSON

To clipboard

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}

CVE-2026-33413 (GCVE-0-2026-33413)

Vulnerability from cvelistv5 – Published: 2026-03-26 13:36 – Updated: 2026-03-26 18:51

Title

etcd: Authorization bypasses in multiple APIs

Summary

etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.42, 3.5.28, and 3.6.9, unauthorized users may bypass authentication or authorization checks and call certain etcd functions in clusters that expose the gRPC API to untrusted or partially trusted clients. In unpatched etcd clusters with etcd auth enabled, unauthorized users are able to call MemberList and learn cluster topology, including member IDs and advertised endpoints; call Alarm, which can be abused for operational disruption or denial of service; use Lease APIs, interfering with TTL-based keys and lease ownership; and/or trigger compaction, permanently removing historical revisions and disrupting watch, audit, and recovery workflows. Kubernetes does not rely on etcd’s built-in authentication and authorization. Instead, the API server handles authentication and authorization itself, so typical Kubernetes deployments are not affected. Versions 3.4.42, 3.5.28, and 3.6.9 contain a patch. If upgrading is not immediately possible, reduce exposure by treating the affected RPCs as unauthenticated in practice. Restrict network access to etcd server ports so only trusted components can connect and/or require strong client identity at the transport layer, such as mTLS with tightly scoped client certificate distribution.

Severity

8.8 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-26 18:51 UTC

CWE

CWE-862 - Missing Authorization

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7868 records in the last 180 days details

References

1 reference

URL	Tags
https://github.com/etcd-io/etcd/security/advisori…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
etcd-io	etcd	Affected: >= 3.6.0-alpha.0, < 3.6.9 Affected: >= 3.5.0-alpha.0, < 3.5.28 Affected: < 3.4.42

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-33413",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-26T18:51:34.624898Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-26T18:51:42.935Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "etcd",
          "vendor": "etcd-io",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 3.6.0-alpha.0, \u003c 3.6.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.5.0-alpha.0, \u003c 3.5.28"
            },
            {
              "status": "affected",
              "version": "\u003c 3.4.42"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.4.42, 3.5.28, and 3.6.9, unauthorized users may bypass authentication or authorization checks and call certain etcd functions in clusters that expose the gRPC API to untrusted or partially trusted clients. In unpatched etcd clusters with etcd auth enabled, unauthorized users are able to call MemberList and learn cluster topology, including member IDs and advertised endpoints; call Alarm, which can be abused for operational disruption or denial of service; use Lease APIs, interfering with TTL-based keys and lease ownership; and/or trigger compaction, permanently removing historical revisions and disrupting watch, audit, and recovery workflows. Kubernetes does not rely on etcd\u2019s built-in authentication and authorization. Instead, the API server handles authentication and authorization itself, so typical Kubernetes deployments are not affected. Versions 3.4.42, 3.5.28, and 3.6.9 contain a patch. If upgrading is not immediately possible, reduce exposure by treating the affected RPCs as unauthenticated in practice. Restrict network access to etcd server ports so only trusted components can connect and/or require strong client identity at the transport layer, such as mTLS with tightly scoped client certificate distribution."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862: Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-26T13:36:10.919Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/etcd-io/etcd/security/advisories/GHSA-q8m4-xhhv-38mg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-q8m4-xhhv-38mg"
        }
      ],
      "source": {
        "advisory": "GHSA-q8m4-xhhv-38mg",
        "discovery": "UNKNOWN"
      },
      "title": "etcd: Authorization bypasses in multiple APIs"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-33413",
    "datePublished": "2026-03-26T13:36:10.919Z",
    "dateReserved": "2026-03-19T17:02:34.171Z",
    "dateUpdated": "2026-03-26T18:51:42.935Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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