CVE-2026-13597

CRITICAL

QRcode Login for WeChat <= 1.3 - Unauthenticated Account Takeover

Title source: cna

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.

References (1)

Core 1

Core References

Exploit exploit vdb-entry technical-description

https://wpscan.com/vulnerability/5e856219-ece5-4d79-8375-fc0cbdc37d6c/

Scores

CVSS v3 9.1

EPSS 0.0026

EPSS Percentile 17.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact total

Details

CWE

CWE-287

Status published

Products (1)

None/微信二维码登陆 < 1.3

Published Jul 27, 2026

Tracked Since Jul 27, 2026