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CVE-2026-42206

Roadiz OpenID Connect nonce generated but never validated — ID token replay attack

MEDIUM
5.7
CVSS Score
Published: May 8, 2026 at 09:54 PM UTC
Updated: October 26, 2026 at 06:10 PM UTC
1 product affected across 1 vendorRoadiz Core Bundle Dev App

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Roadiz is a polymorphic content management system based on a node system. Prior to versions 2.3.43, 2.5.45, 2.6.31, and 2.7.18, the roadiz/openid package generates an OIDC nonce in OAuth2LinkGenerator::generate() and includes it in the authorization request sent to the identity provider, but never stores it and never validates it on the callback. The OpenIdJwtConfigurationFactory validation chain does not include a nonce constraint, and OpenIdAuthenticator::authenticate() never checks the nonce claim in the returned ID token against a stored value. This issue has been patched in versions 2.3.43, 2.5.45, 2.6.31, and 2.7.18.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Roadiz Core Bundle Dev App· Roadiz
90%
v < 2.3.432.5.0 ≤ v < 2.5.452.6.0 ≤ v < 2.6.312.7.0 ≤ v < 2.7.182.5.02.6.02.7.0
Affected range stops below 2.3.43, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.5.45, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.6.31, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.7.18, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRM
Source: cverecord
https://github.com/roadiz/core-bundle-dev-app/security/advisories/GHSA-3gx8-q682-38mx

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMGitHub_M
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-345

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