Vulnerability-Lookup

OPENSUSE-SU-2026:11872-1

Vulnerability from csaf_opensuse - Published: 2026-09-24 00:00 - Updated: 2026-09-25 08:57

Summary

distribution-registry-3.1.1-8.1 on GA media

Severity

Moderate

Notes

Title of the patch: distribution-registry-3.1.1-8.1 on GA media

Description of the patch: These are all security issues fixed in the distribution-registry-3.1.1-8.1 package on the GA media of openSUSE Tumbleweed.

Patchnames: openSUSE-Tumbleweed-2026-11872

CVE-2026-81871

4.8 (Medium)


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

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2026-81872

5.3 (Medium)


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

Affected products

Recommended 4 products, the same list as for CVE-2026-81871

Threats

Impact moderate

References

8 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-2026-81871/	self
https://www.suse.com/security/cve/CVE-2026-81872/	self
https://www.suse.com/security/cve/CVE-2026-81871	external
https://bugzilla.suse.com/1281466	external
https://www.suse.com/security/cve/CVE-2026-81872	external
https://bugzilla.suse.com/1281467	external

JSON

To clipboard

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          "text": "https://www.suse.com/security/cve/CVE-2026-81871"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE, OTEL_EXPORTER_OTLP_CERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but newGRPCDialOptions does not apply cfg.tlsCfg when creating gRPC transport credentials. The environment-only TLS path instead uses credentials.NewTLS with system roots and no configured client certificate, bypassing intended private CA pinning and mutual TLS unless the application also supplies WithTLSCredentials. A network attacker able to intercept or spoof the collector connection with a system-trusted certificate can read or alter log telemetry. This issue is fixed in version 0.21.0.",
          "title": "CVE description"
        }
      ],
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          "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.ppc64le",
          "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.s390x",
          "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.x86_64"
        ]
      },
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          "url": "https://www.suse.com/security/cve/CVE-2026-81871"
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          "product_ids": [
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            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.ppc64le",
            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.s390x",
            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.x86_64"
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            "version": "3.1"
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            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.ppc64le",
            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.s390x",
            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.x86_64"
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        }
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          "category": "general",
          "text": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is backpressured. NewBatchingProcessor wraps the exporter with newBufferExporter(exporter, 1), and the poll loop calls queue.TryDequeue and bufferExporter.EnqueueExport before immediately signaling pollTrigger whenever the queue remains at or above batchSize. Because a failed nonblocking EnqueueExport leaves the queue length unchanged, the processor repeatedly retries without waiting for its ticker, exhausting CPU and degrading or denying service in the embedding process. This issue is fixed in version 0.21.0.",
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            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.x86_64"
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            "version": "3.1"
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            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.ppc64le",
            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.s390x",
            "openSUSE Tumbleweed:distribution-registry-0:3.1.1-8.1.x86_64"
          ]
        }
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          "date": "2026-09-24T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-81872"
    }
  ]
}

CVE-2026-81871 (GCVE-0-2026-81871)

Vulnerability from cvelistv5 – Published: 2026-09-16 20:43 – Updated: 2026-09-17 19:24

Title

OpenTelemetry-Go: Log gRPC exporter ignores env TLS certs, bypassing mTLS/pinning

Summary

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE, OTEL_EXPORTER_OTLP_CERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but newGRPCDialOptions does not apply cfg.tlsCfg when creating gRPC transport credentials. The environment-only TLS path instead uses credentials.NewTLS with system roots and no configured client certificate, bypassing intended private CA pinning and mutual TLS unless the application also supplies WithTLSCredentials. A network attacker able to intercept or spoof the collector connection with a system-trusted certificate can read or alter log telemetry. This issue is fixed in version 0.21.0.

Severity

6.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 17:10 UTC

CWE

CWE-295 - Improper Certificate Validation
CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints

Assigner

GitHub_M mitre root

References

3 references

URL	Tags
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-telemetry	opentelemetry-go	Affected: < 0.21.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81871",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-17T17:10:34.419383Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-17T19:24:00.081Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "opentelemetry-go",
          "vendor": "open-telemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.21.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE, OTEL_EXPORTER_OTLP_CERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but newGRPCDialOptions does not apply cfg.tlsCfg when creating gRPC transport credentials. The environment-only TLS path instead uses credentials.NewTLS with system roots and no configured client certificate, bypassing intended private CA pinning and mutual TLS unless the application also supplies WithTLSCredentials. A network attacker able to intercept or spoof the collector connection with a system-trusted certificate can read or alter log telemetry. This issue is fixed in version 0.21.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-923",
              "description": "CWE-923: Improper Restriction of Communication Channel to Intended Endpoints",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T20:43:40.119Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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        {
          "name": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w34q-cm8f-9c5x",
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            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w34q-cm8f-9c5x"
        },
        {
          "name": "https://github.com/open-telemetry/opentelemetry-go/commit/c65d435b43e5e6b82310e6b18dd4cdcb8ac63a0c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-go/commit/c65d435b43e5e6b82310e6b18dd4cdcb8ac63a0c"
        },
        {
          "name": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/exporters/otlp/otlplog/otlploggrpc/v0.21.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/exporters/otlp/otlplog/otlploggrpc/v0.21.0"
        }
      ],
      "source": {
        "advisory": "GHSA-w34q-cm8f-9c5x",
        "discovery": "UNKNOWN"
      },
      "title": "OpenTelemetry-Go: Log gRPC exporter ignores env TLS certs, bypassing mTLS/pinning"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-81871",
    "datePublished": "2026-09-16T20:43:40.119Z",
    "dateReserved": "2026-08-27T17:48:42.120Z",
    "dateUpdated": "2026-09-17T19:24:00.081Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-81872 (GCVE-0-2026-81872)

Vulnerability from cvelistv5 – Published: 2026-09-16 20:42 – Updated: 2026-09-17 13:36

Title

OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full

Summary

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is backpressured. NewBatchingProcessor wraps the exporter with newBufferExporter(exporter, 1), and the poll loop calls queue.TryDequeue and bufferExporter.EnqueueExport before immediately signaling pollTrigger whenever the queue remains at or above batchSize. Because a failed nonblocking EnqueueExport leaves the queue length unchanged, the processor repeatedly retries without waiting for its ticker, exhausting CPU and degrading or denying service in the embedding process. This issue is fixed in version 0.21.0.

Severity

6.3 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-17 13:36 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-834 - Excessive Iteration

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_CONFIRM
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC
https://github.com/open-telemetry/opentelemetry-g…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
open-telemetry	opentelemetry-go	Affected: < 0.21.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-81872",
                "options": [
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-09-17T13:36:11.140898Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        "title": "CISA ADP Vulnrichment"
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            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
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            "subConfidentialityImpact": "NONE",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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.

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Action not permitted

OPENSUSE-SU-2026:11872-1

CVE-2026-81871 (GCVE-0-2026-81871)

CVE-2026-81872 (GCVE-0-2026-81872)

Tags

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Nomenclature

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