CVE-2026-41491Network attack vector

Restricted method invocation via inconsistent path normalization

Published May 8, 2026 · Updated May 8, 2026

Access-control bypass in Dapr allows remote authenticated users to invoke restricted application methods through crafted method paths. The service-invocation ACL decodes escapes, resolves traversal sequences, and strips URL delimiters while dispatch forwards a differently normalized method. Exploitation requires configured service-invocation policies and access to the HTTP or gRPC API; resulting data access or modification depends on the restricted target method.

CVSS severity8.1
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Access-control bypass in Dapr allows remote authenticated users to invoke restricted application methods through crafted method paths. The service-invocation ACL decodes escapes, resolves traversal sequences, and strips URL delimiters while dispatch forwards a differently normalized method. Exploitation requires configured service-invocation policies and access to the HTTP or gRPC API; resulting data access or modification depends on the restricted target method.

The record

CVE
CVE-2026-41491
Published
May 8, 2026
Updated
May 8, 2026
Vendor
Dapr
Product
Dapr
Classifications
CWE-284, CWE-22, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 1.16.0-rc.1, < 1.16.14
  2. Affected versionversion=>= 1.17.0-rc.1, < 1.17.5
  3. Affected versionversion=>= 1.3.0, < 1.15.14

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dapr · Daprversion=>= 1.16.0-rc.1, < 1.16.14; version=>= 1.17.0-rc.1, < 1.17.5; version=>= 1.3.0, < 1.15.14

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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