Vulnerability · Published May 8, 2026 · Assigned by GitHub_M
CVE-2026-42206Roadiz OpenID Connect nonce generated but never validated — ID token replay attack
Medium 5.7
In plain English
A medium-severity insufficient verification of data authenticity in core-bundle-dev-app from roadiz. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | roadiz/openid | 2.7.18 | GHSA-3gx8-q682-38mx |
| Packagist | roadiz/openid | 2.6.31 | GHSA-3gx8-q682-38mx |
| Packagist | roadiz/openid | 2.5.45 | GHSA-3gx8-q682-38mx |
| Packagist | roadiz/openid | 2.3.43 | GHSA-3gx8-q682-38mx |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| roadiz | core-bundle-dev-app | < 2.3.43>= 2.5.0, < 2.5.45>= 2.6.0, < 2.6.31>= 2.7.0, < 2.7.18 |
Weakness: CWE-345 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P