CVE-2026-2892: CWE-285 Improper Authorization in themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
CVE-2026-2892 is a high-severity vulnerability in the Otter Blocks WordPress plugin that allows unauthenticated attackers to bypass purchase verification. The vulnerability arises because the plugin relies on an unsigned cookie ('o_stripe_data') to verify Stripe product ownership without server-side validation. Attackers can forge this cookie with a target product ID to access purchase-gated content without paying. This affects all versions up to and including 3.1.4. No official patch or remediation guidance is currently available from the vendor.
AI Analysis
Technical Summary
The Otter Blocks plugin for WordPress contains an improper authorization vulnerability (CWE-285) due to its 'get_customer_data' method trusting an unsigned 'o_stripe_data' cookie for Stripe purchase verification. The 'check_purchase' method does not perform server-side verification against the Stripe API for one-time payment mode purchases, allowing unauthenticated attackers to forge the cookie with a product ID exposed in the checkout block's HTML source. This enables bypass of purchase-gated content visibility controls in all affected versions.
Potential Impact
An attacker can gain unauthorized access to content that should be restricted to paying customers by forging the 'o_stripe_data' cookie. This compromises the confidentiality of purchase-gated content but does not affect integrity or availability. The CVSS v3.1 base score is 7.5 (High), reflecting network attack vector, no privileges required, no user interaction, and high impact on confidentiality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling the affected plugin or restricting access to sensitive content by alternative means. Monitoring for updates from themeisle is recommended to apply an official fix once released.
CVE-2026-2892: CWE-285 Improper Authorization in themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
Description
CVE-2026-2892 is a high-severity vulnerability in the Otter Blocks WordPress plugin that allows unauthenticated attackers to bypass purchase verification. The vulnerability arises because the plugin relies on an unsigned cookie ('o_stripe_data') to verify Stripe product ownership without server-side validation. Attackers can forge this cookie with a target product ID to access purchase-gated content without paying. This affects all versions up to and including 3.1.4. No official patch or remediation guidance is currently available from the vendor.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Otter Blocks plugin for WordPress contains an improper authorization vulnerability (CWE-285) due to its 'get_customer_data' method trusting an unsigned 'o_stripe_data' cookie for Stripe purchase verification. The 'check_purchase' method does not perform server-side verification against the Stripe API for one-time payment mode purchases, allowing unauthenticated attackers to forge the cookie with a product ID exposed in the checkout block's HTML source. This enables bypass of purchase-gated content visibility controls in all affected versions.
Potential Impact
An attacker can gain unauthorized access to content that should be restricted to paying customers by forging the 'o_stripe_data' cookie. This compromises the confidentiality of purchase-gated content but does not affect integrity or availability. The CVSS v3.1 base score is 7.5 (High), reflecting network attack vector, no privileges required, no user interaction, and high impact on confidentiality.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling the affected plugin or restricting access to sensitive content by alternative means. Monitoring for updates from themeisle is recommended to apply an official fix once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-02-20T18:15:09.231Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f365d8cbff5d8610ec5024
Added to database: 4/30/2026, 2:23:20 PM
Last enriched: 5/8/2026, 2:13:39 AM
Last updated: 6/14/2026, 1:30:35 PM
Views: 68
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.