CVE-2023-37918Public exploitNetwork attack vector

Authentication bypass via substring health-check allowlist

Published Jul 21, 2023 · Updated Oct 10, 2024

Authentication bypass in Dapr before 1.10.9 and 1.11.0 through 1.11.1 allows remote attackers to invoke HTTP APIs without a token. The sidecar's APITokenAuthMiddleware treats any full URL containing /healthz, including a query string, as an authentication-exempt health check. API token authentication must be enabled and the HTTP API reachable; successful exploitation permits access to any Dapr HTTP API, including service invocation.

CVSS severity6.8
Medium
EPSS probability1.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Dapr before 1.10.9 and 1.11.0 through 1.11.1 allows remote attackers to invoke HTTP APIs without a token. The sidecar's APITokenAuthMiddleware treats any full URL containing /healthz, including a query string, as an authentication-exempt health check. API token authentication must be enabled and the HTTP API reachable; successful exploitation permits access to any Dapr HTTP API, including service invocation.

The record

CVE
CVE-2023-37918
Published
Jul 21, 2023
Updated
Oct 10, 2024
Vendor
Dapr
Product
Dapr
Classifications
CWE-305, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.11.2
  2. Affected versionversion=< 1.11.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Dapr · Daprversion=0 <1.11.2; version=< 1.11.2

Published CVSS scores

6.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-305Authentication Bypass by Primary Weakness
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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