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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-32811

26
FAUCET Score

CVE-2026-32811 is a high-severity access control bypass vulnerability impacting Heimdall versions 0.7.0-alpha through 0.17.10 when operating in Envoy gRPC decision API mode. A URL encoding flaw allows non-wildcard path expressions to be bypassed, potentially granting unintended access if the service is configured with an "allow all" default rule. Rated with a CVSS score of 7.5 (HIGH), this vulnerability has a network attack vector and low attack complexity, with a high impact on integrity. There is no evidence of active exploitation, no public exploit code available, and community discussion remains minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.7.0, < 0.17.11CPE matchmatch criteria
cpe:2.3:a:dadrus:heimdall:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.2HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 5th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/dadrus/heimdallFixed in: 0.17.11

Vendor Advisories (1)

goGHSA-r8x2-fhmf-6mxphigh

Heimdall: Path received via Envoy gRPC corrupted when containing query string

Mar 18, 2026

References

github.com / dadrus/heimdall/commit/50321b3007db1ccafdc6b1cfd6bdc3689c19a502
Patch
github.com / dadrus/heimdall/pull/3106
Issue TrackingPatch
github.com / dadrus/heimdall/security/advisories/GHSA-r8x2-fhmf-6mxp
ExploitVendor Advisory
github.com / envoyproxy/envoy/blob/105b4acd422d67fcff908ec38d91c7676d079939/api/envoy/service/auth/v3/attribute_context.proto
Patch