Access Control Bypass in Dapr Event-Driven Runtime
CVE-2026-41491

8.1HIGH

Key Information:

Vendor

Dapr

Status
Dapr
Vendor
CVE Published:
8 May 2026

What is CVE-2026-41491?

A security flaw has been discovered in the Dapr event-driven runtime that enables unauthorized access to services by bypassing access control policies. This vulnerability exploits the handling of reserved URL characters and path traversal sequences in method paths. During service invocation, the Access Control List (ACL) erroneously normalized the method path separately from the dispatch mechanism, leading to a situation where the ACL evaluated one path while the target application received a different one. This inconsistency can be leveraged to access restricted services. Patches have been released in versions 1.15.14, 1.16.14, and 1.17.5 to address this vulnerability.

Affected Version(s)

dapr >= 1.3.0, < 1.15.14 < 1.3.0, 1.15.14

dapr >= 1.16.0-rc.1, < 1.16.14 < 1.16.0-rc.1, 1.16.14

dapr >= 1.17.0-rc.1, < 1.17.5 < 1.17.0-rc.1, 1.17.5

References

https://github.com/dapr/dapr/security/advisories/GHSA-85g...
x_refsource_CONFIRM
https://github.com/dapr/dapr/pull/9589
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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