CVE-2026-55181Public exploitNetwork attack vectorHinoki check available

OIDC disable bypass via unawaited enablement check

Published Sep 30, 2026 · Updated Sep 30, 2026

Authentication bypass in Quenary Tugtainer before 1.30.3 allows remote attackers to initiate OIDC login despite OIDC_ENABLED=false. The login method in auth_oidc_provider.py calls the asynchronous is_enabled() check without awaiting it, so the check evaluates a coroutine rather than the disabled state. The demonstrated result is an OIDC redirect; obtaining an application session additionally requires a configured identity provider and valid credentials.

CVSS severity9.4
Critical
EPSS probability0.60%
Next 30 days · Oct 20, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Authentication bypass in Quenary Tugtainer before 1.30.3 allows remote attackers to initiate OIDC login despite OIDC_ENABLED=false. The login method in auth_oidc_provider.py calls the asynchronous is_enabled() check without awaiting it, so the check evaluates a coroutine rather than the disabled state. The demonstrated result is an OIDC redirect; obtaining an application session additionally requires a configured identity provider and valid credentials.

The record

CVE
CVE-2026-55181
Published
Sep 30, 2026
Updated
Sep 30, 2026
Vendor
Quenary
Product
Tugtainer
Classifications
T1078
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 2026Record 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=< 1.30.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Quenary · Tugtainerversion=< 1.30.3

Published CVSS scores

9.4QuenaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1078Valid Accounts

Public exploit references

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Technologies

Your stack

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