High 7.5Published Apr 30, 2026

CVE-2026-2892Otter Blocks <= 3.1.4 - Improper Authorization to Unauthenticated Purchase Verification Bypass via Forged Cookie

Updated under an hour ago (Oct 27, 2026, 11:20 AM ET)

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It affects themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE

Exploited in the last 30 days

The Otter Blocks plugin for WordPress is vulnerable to Purchase Verification Bypass in all versions up to, and including, 3.1.4. This is due to the 'get_customer_data' method relying on an unsigned 'o_stripe_data' cookie to determine Stripe product ownership for unauthenticated users. The 'check_purchase' method trusts this cookie data without performing server-side verification against the Stripe API for one-time 'payment' mode purchases. This makes it possible for unauthenticated attackers to bypass Stripe purchase-gated content visibility conditions by forging the 'o_stripe_data' cookie with a target product ID, which is publicly exposed in the checkout block's HTML source.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-285
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Wordfence
NVD analysis: Deferred
Record last updated: May 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE themeisle:otter_blocks_gutenberg_blocks_page_builder_for_gutenberg_editor_and_fse (from the name)	through 3.1.4	CNA record

References

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/3443950f-1f94-4e0b-8906-1a9b9602a746?source=cve
https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L260
https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L284
https://plugins.trac.wordpress.org/browser/otter-blocks/trunk/inc/plugins/class-block-conditions.php#L274
https://plugins.trac.wordpress.org/changeset/3471326/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.