CVE-2026-128085

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-128085", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-11-12T21:24:51.131Z", "datePublished": "2026-11-13T18:53:14.393Z", "dateUpdated": "2026-11-13T18:53:14.393Z"}, "containers": {"cna": {"title": "opentelemetry-go: AttributeValueLengthLimit is fully bypassed by attribute values composed of valid U+FFFD runes", "problemTypes": [{"descriptions": [{"cweId": "CWE-135", "lang": "en", "description": "CWE-135: Incorrect Calculation of Multi-Byte String Length", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-770", "lang": "en", "description": "CWE-770: Allocation of Resources Without Limits or Throttling", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:L", "version": "3.1"}}], "references": [{"name": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-q7gw-24fr-5p69", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-q7gw-24fr-5p69"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/commit/017b08c7f1018b619991aaf6b2299d4beb9da1d3", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/commit/017b08c7f1018b619991aaf6b2299d4beb9da1d3"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/log/v1.47.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/log/v1.47.0"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/v1.47.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/v1.47.0"}, {"name": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/trace/v1.47.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/trace/v1.47.0"}], "affected": [{"vendor": "open-telemetry", "product": "opentelemetry-go", "versions": [{"version": ">= 0.9.0, < 1.47.0", "status": "affected"}]}, {"vendor": "open-telemetry", "product": "go.opentelemetry.io/otel/sdk", "versions": [{"version": ">= 1.33.0, < 1.47.0", "status": "affected"}]}, {"vendor": "open-telemetry", "product": "go.opentelemetry.io/otel/sdk", "versions": [{"version": ">= 0.9.0, < 1.47.0", "status": "affected"}]}, {"vendor": "open-telemetry", "product": "go.opentelemetry.io/otel/sdk", "versions": [{"version": ">= 1.35.0, < 1.47.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-11-13T18:53:14.393Z"}, "descriptions": [{"lang": "en", "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. From SDK version 1.33.0, SDK log version 0.9.0, and trace version 1.35.0 until version 1.47.0, the AttributeValueLengthLimit and WithAttributeValueLengthLimit truncation paths in sdk/internal/attrnorm, sdk/log/internal/attrnorm, and trace/auto.go do not count valid U+FFFD replacement characters. This is a distinct incomplete-fix defect in the replacement truncation code introduced by the remediation for CVE-2026-81869. Values composed of or dominated by those characters can therefore exceed the configured character and memory bound in span, log-record, and auto-instrumentation trace attributes. Attacker-controlled telemetry attributes can increase retained memory and pipeline pressure, while confidentiality and integrity are not affected. This issue is fixed in version 1.47.0."}], "source": {"advisory": "GHSA-q7gw-24fr-5p69", "discovery": "UNKNOWN"}}}}

{}

{"affected": [{"affectedData": [{"product": "opentelemetry-go", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": ">= 0.9.0, < 1.47.0"}]}, {"product": "go.opentelemetry.io/otel/sdk", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": ">= 1.33.0, < 1.47.0"}]}, {"product": "go.opentelemetry.io/otel/sdk", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": ">= 0.9.0, < 1.47.0"}]}, {"product": "go.opentelemetry.io/otel/sdk", "vendor": "open-telemetry", "versions": [{"status": "affected", "version": ">= 1.35.0, < 1.47.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. From SDK version 1.33.0, SDK log version 0.9.0, and trace version 1.35.0 until version 1.47.0, the AttributeValueLengthLimit and WithAttributeValueLengthLimit truncation paths in sdk/internal/attrnorm, sdk/log/internal/attrnorm, and trace/auto.go do not count valid U+FFFD replacement characters. This is a distinct incomplete-fix defect in the replacement truncation code introduced by the remediation for CVE-2026-81869. Values composed of or dominated by those characters can therefore exceed the configured character and memory bound in span, log-record, and auto-instrumentation trace attributes. Attacker-controlled telemetry attributes can increase retained memory and pipeline pressure, while confidentiality and integrity are not affected. This issue is fixed in version 1.47.0."}], "id": "CVE-2026-128085", "lastModified": "2026-11-13T19:19:31.193", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "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:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-13T19:19:31.193", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/commit/017b08c7f1018b619991aaf6b2299d4beb9da1d3"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/log/v1.47.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/sdk/v1.47.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/releases/tag/trace/v1.47.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-q7gw-24fr-5p69"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-135"}, {"lang": "en", "value": "CWE-770"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}