CVE-2026-13597
Critical
Description
The 微信二维码登陆 WordPress plugin through 1.3 does not properly validate WeChat webhook requests, as its signature check always passes, and it discloses the generated login code in the webhook response. This allows an unauthenticated attacker to forge a login event for any existing username, read the login code, and redeem it through an unauthenticated AJAX action to log in as that user, including an administrator, without a password.
SeverityCritical
CVSS9.1
Exploit probability—
Product微信二维码登陆
PublishedJul 27, 2026
First seenJul 27, 2026
Weakness typeCWE-287Improper authentication
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 微信二维码登陆 | v ≤ 1.3 | — |
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