CVE-2026-90977

Clean Login < 1.19 - Unauthenticated CAPTCHA Bypass via Empty Session Comparison

MEDIUM

5.3

CVSS Score

Published: September 18, 2026 at 06:11 AM UTC

Updated: September 18, 2026 at 07:19 PM UTC

1 product affected across 1 vendorClean Login

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Severity

MEDIUM5.3

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

The Clean Login WordPress plugin before 1.19 does not verify its registration CAPTCHA when the stored session value is empty, allowing unauthenticated users to bypass the anti-automation control on the registration form and create accounts without solving it.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Clean Login · Codectionwordpress-plugin

60%

v < 1.19

Affected range stops below 1.19, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description

Source: cverecord

https://wpscan.com/vulnerability/368db83e-ed7b-4f67-99db-2e5f1c01568e/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMWPScan

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-697

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