CVE-2023-47108 | DoS vulnerability in otelgrpc (uncontrolled resource consumption) due to unbound cardinality metrics

OpenTelemetry-Go Contrib is a collection of third-party packages for OpenTelemetry-Go. Starting in version 0.37.0 and prior to version 0.46.0, the grpc Unary Server Interceptor out of the box adds labels `net.peer.sock.addr` and `net.peer.sock.port` that have unbound cardinality. It leads to the server's potential memory exhaustion when many malicious requests are sent. An attacker can easily flood the peer address and port for requests. Version 0.46.0 contains a fix for this issue. As a workaround to stop being affected, a view removing the attributes can be used. The other possibility is to disable grpc metrics instrumentation by passing `otelgrpc.WithMeterProvider` option with `noop.NewMeterProvider`.

Published: 2023-11-10 Last update: 2025-10-28 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-47108 is rated Moderate Risk (61/100): CVSS High severity, with medium exploitation likelihood (EPSS 4.30%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-47108

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-25 4.41% 4.30% -0.11%
2 2026-05-22 4.30% 4.41% +0.11%
3 2025-11-28 — 4.30% —

Full EPSS history (24 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-47108

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]

Weakness enumeration for CVE-2023-47108

GitHub Security Advisory for CVE-2023-47108

GHSA-8pgv-569h-w5rw · Severity: high · Ecosystem: go — otelgrpc DoS vulnerability due to unbound cardinality metrics

OS Trackers for CVE-2023-47108

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2023-47108
suse high CVE-2023-47108 severity important: SUSE including 359 source package names (2.4.6-6.1:etcd-3.5.12-150000.7.6.1, amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, …), 1282 product×package rows across 325 product lines (Container containers/milvus, Container suse/sl-micro/6.0/baremetal-os-container, … (325 product lines)): Fixed 725, Known Not Affected 344, Known Affected 213. https://www.suse.com/security/cve/CVE-2023-47108/
ubuntu medium CVE-2023-47108 medium priority: Ubuntu including 1 source packages (golang-opentelemetry-contrib), 8 status rows across 8 suites (focal, jammy, mantic, noble, oracular, plucky, questing, upstream): DNE 4, ignored 2, needs-triage 2. https://ubuntu.com/security/CVE-2023-47108

Affected software / configurations for CVE-2023-47108

Vendor Product Version Raw CPE
opentelemetry opentelemetry < 0.46.0 cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:go:*:*

References for CVE-2023-47108

URL Tags
https://github.com/open-telemetry/opentelemetry-go-contrib/blob/9d4eb7e7706038b07d33f83f76afbe13f53d171d/instrumentation/google.golang.org/grpc/otelgrpc/interceptor.go#L327 Product
https://github.com/open-telemetry/opentelemetry-go-contrib/blob/instrumentation/google.golang.org/grpc/otelgrpc/v0.45.0/instrumentation/google.golang.org/grpc/otelgrpc/config.go#L138 Product
https://github.com/open-telemetry/opentelemetry-go-contrib/commit/04c5dcbb5b35f14b4e6793b245919c72addbc7d0
https://github.com/open-telemetry/opentelemetry-go-contrib/commit/b44dfc9092b157625a5815cb437583cee663333b Patch
https://github.com/open-telemetry/opentelemetry-go-contrib/pull/4322 Issue Tracking Patch
https://github.com/open-telemetry/opentelemetry-go-contrib/security/advisories/GHSA-8pgv-569h-w5rw Vendor Advisory
https://pkg.go.dev/go.opentelemetry.io/otel/metric/noop#NewMeterProvider Product
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