CVE-2026-115910
Description
A flaw was found in social-auth-core. The OpenID Connect authentication backend stores nonces (single-use security tokens used to prevent replay attacks) in a shared table without binding them to the initiating browser session and authentication state. A remote attacker who obtains a victim's unused authorization code can start a separate login session and submit the victim's code to pass validation. This vulnerability allows the attacker to log in as the victim, resulting in account takeover and unauthorized access.
Statement
This vulnerability is rated as having a Moderate severity for Red Hat products because successful exploitation requires high attack complexity, specifically the interception of an unconsumed authorization code from an in-flight login flow alongside victim user interaction. In Red Hat Ansible Automation Platform, external OpenID Connect integration is optional and not enabled by default, limiting baseline exposure. Even where generic OpenID Connect authentication is configured, an adversary cannot directly trigger the vulnerability without external means to steal valid authorization tokens before expiration.
Mitigation
Upgrade social-auth-core to 6.2.0, which binds OIDC nonces to the initiating browser session and OAuth2 state and rejects authorization codes from other login attempts; enabling PKCE mitigates on versions that cannot be upgraded; in-progress OIDC logins must restart after upgrading.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.8 | N/A | 6.8 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | High |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
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