CVE-2026-13597

QRcode Login for WeChat <= 1.3 - Unauthenticated Account Takeover

Published Jul 27, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Markchenlife
Markchenlife qrcode-login-for-weixin
Wordpress
Wordpress wordpress
Vendors & Products Markchenlife
Markchenlife qrcode-login-for-weixin
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Weaknesses CWE-287
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title QRcode Login for WeChat <= 1.3 - Unauthenticated Account Takeover
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Jul 27, 2026, 1:52 PM
Reserved
Jun 29, 2026, 7:36 AM
Status
Deferred
Published
Jul 27, 2026, 7:16 AM
Modified
Jul 27, 2026, 8:33 PM