CVE-2026-109937

Otter Blocks < 3.2.3 - Unauthenticated Open Redirect via Stripe Checkout Block

Published Oct 18, 2026 CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Description
The Otter Blocks WordPress plugin before 3.2.3 does not validate that a user-supplied return URL belongs to the site before using it to build the return destination of a Stripe Checkout session, allowing unauthenticated attackers to redirect victims who complete or cancel checkout to an arbitrary external URL.

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 Wordpress-extensions
Wordpress-extensions otter Blocks
Vendors & Products Wordpress-extensions
Wordpress-extensions otter Blocks
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-601
Type Values Removed Values Added
Description The Otter Blocks WordPress plugin before 3.2.3 does not validate that a user-supplied return URL belongs to the site before using it to build the return destination of a Stripe Checkout session, allowing unauthenticated attackers to redirect victims who complete or cancel checkout to an arbitrary external URL.
Title Otter Blocks < 3.2.3 - Unauthenticated Open Redirect via Stripe Checkout Block
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Oct 18, 2026, 11:12 AM
Reserved
Oct 13, 2026, 11:18 AM
Status
Deferred
Published
Oct 18, 2026, 7:16 AM
Modified
Oct 19, 2026, 9:02 PM