CVE-2023-50708

What it is

yii2-authclient is an extension that adds OpenID, OAuth, OAuth2 and OpenId Connect consumers for the Yii framework 2.0. In yii2-authclient prior to version 2.2.15, the Oauth1/2 `state` and OpenID Connect `nonce` is vulnerable for a `timing attack` since it is compared via regular string comparison (instead of `Yii::$app->getSecurity()->compareString()`). Version 2.2.15 contains a patch for the issue. No known workarounds are available.

At a glance

Exploitability

Can be exploited over the network without logging in, but needs a user to act. High risk of data tampering.

Exploit odds

0.7% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-12-22 19:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 06:39 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.7% in the next 30 days (EPSS).
• Severity: 6.1 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-12-22 19:15 UTC

Last modified

2026-06-17 06:39 UTC

Exploit probability

0.7% · EPSS, next 30 days

Weakness

CWE-203

Record status

Modified

Affected

• Yiiframework yii2-authclient < 2.2.15

Attack profile CVSS 3.1 · 6.1

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

Required

Scope

Changed

Confidentiality

None

Integrity

High

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-50708.md and follow it. Check whether this project is affected by CVE-2023-50708. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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