CVE-2026-4945

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

MEDIUM
5.3
CVSS Score
Published: September 7, 2026 at 12:29 PM UTC
Updated: September 8, 2026 at 02:17 PM UTC
1 product affected across 1 vendorOtter Blocks

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

The 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.

Affected

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

Otter Blocks· Themeislewordpress-plugin
60%
v ≤ 3.1.7

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.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

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

CVSS

5.3MEDIUMWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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