CVE-2026-90977

DiscoveredSep 18, 2026UpdatedSep 18, 2026

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.

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CVSS v3.1

5.3 MEDIUM

EPSS

0.37%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Sep 19, 2026 → Sep 25, 2026

▲ 0.10pp

0.27% → 0.37% over 2 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeUNCHANGED

ConfidentialityLOW

IntegrityNONE

AvailabilityNONE

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

Connections

1 relationships

CWE-697

source

Timeline

disclosure → media coverage

Sep 18, 2026

Disclosure — published as a CVE record.

Public PoC (1)

github.com/aminquliyev057/CVE-2026-90977

Unverified third-party code — review before executing.