CVE-2025-24856
Medium
Description
An issue was discovered in the oidc (aka OpenID Connect Authentication) extension before 4.0.0 for TYPO3. The account linking logic allows a pre-hijacking attack, leading to Account Takeover. The attack can only be exploited if the following requirements are met: (1) an attacker can anticipate the e-mail address of the user, (2) an attacker can register a public frontend user account using that e-mail address before the user's first OIDC login, and (3) the IDP returns an email field containing the e-mail address of the user,
SeverityMedium
CVSS4.2
Exploit probability—
ProductCausal/oidc
PublishedMar 16, 2025
First seenMar 16, 2025
Weakness typeCWE-348CWE-348
How to fix
Update
- causal/oidc4.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| causal/oidcPackagist | 3.0.0 ≤ v < 4.0.0 | 4.0.0 |
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