Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-4945
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-07 13:20:22 UTC
Updated2026-09-08 14:17:23 UTC
DescriptionThe Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.1.7 via the 'watch_checkout' function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to pay for a lower-cost product while obtaining entitlement for a premium product by manipulating the product_id parameter independently of the price_id parameter in the Stripe checkout URL.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

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

Problem Types: CWE-639 | CWE-639 CWE-639 Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Themeisle Otter Blocks Gutenberg Blocks Page Builder For Gutenberg Editor FSE affected 3.1.7 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/7ecb9f61-68d5-4c70-8d7d-e4fb0... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset/3496611 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/render/class-stripe-checkout-b... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Dmitrii Ignatyev (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-27T00:35:23.000ZVendor Notified
CNA2026-09-06T00:00:00.000ZDisclosed

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