EUVD-2026-72366
GHSA-pvh2-45c7-fq5c
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Network-accessible with no auth or complexity; integrity impact is Low (entitlement fraud only) with no confidentiality or availability impact.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Insecure Direct Object Reference in Otter Blocks (WordPress plugin by Themeisle) through version 3.1.7 enables unauthenticated attackers to decouple the product_id and price_id parameters in a Stripe checkout URL, paying the price of a cheaper product while the watch_checkout function grants entitlement for the premium product whose ID was substituted. The flaw is exploitable against any WordPress site running the plugin with a Stripe checkout block configured. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target WordPress site must have the Otter Blocks plugin installed at version 3.1.7 or earlier and must have a Stripe checkout block actively published on at least one page. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 medium score (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) accurately reflects that exploitation is trivially easy - network-accessible, no authentication, no complexity - but limited in impact per transaction to an integrity violation (obtaining an unauthorized product entitlement). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the upstream patch committed to the WordPress plugin repository in changeset 3496611 (https://plugins.trac.wordpress.org/changeset/3496611/). … Detailed patch versions, workarounds, and compensating controls in full report. |
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