CVE-2026-32879Network attack vector

Channel-secret disclosure via skipped WebAuthn assertion

Published Mar 23, 2026 · Updated Mar 23, 2026

Authentication bypass in QuantumNous New API 0.10.0 through 0.11.9-alpha.1 allows remote authenticated users to read channel secrets. The POST /api/verify passkey branch checks only for a stored passkey record, then completes secure verification without validating a WebAuthn assertion. Exploitation requires an existing authenticated session and registered passkey; confirmed impact is limited to secrets returned by a root-only channel-key endpoint.

CVSS severity4.9
Medium
EPSS probability0.29%
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 QuantumNous New API 0.10.0 through 0.11.9-alpha.1 allows remote authenticated users to read channel secrets. The POST /api/verify passkey branch checks only for a stored passkey record, then completes secure verification without validating a WebAuthn assertion. Exploitation requires an existing authenticated session and registered passkey; confirmed impact is limited to secrets returned by a root-only channel-key endpoint.

The record

CVE
CVE-2026-32879
Published
Mar 23, 2026
Updated
Mar 23, 2026
Vendor
QuantumNous
Product
New API
Classifications
CWE-287, T1555
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 23, 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=>= 0.10.0, <= 0.11.9-alpha.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

QuantumNous · New APIversion=>= 0.10.0, <= 0.11.9-alpha.1

Published CVSS scores

4.9GitHubCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1555Credentials from Password Stores

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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