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CVE-2026-4945— Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass

Quick assessment

Affected
themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Otter Blocks是WordPress基金会开源的一个内容管理系统的可视化编辑组件。 WordPress Otter Blocks 3.1.7及之前版本存在授权问题漏洞，该漏洞源于'watch_checkout'函数缺少对用户控制密钥的验证，可能导致未经身份验证的攻击者操纵Stripe checkout URL中的product_id参数独立于price_id参数，以较低价格购买并获得高级产品权限。

CVSS 5.3 · Medium EPSS 0.39% · P33

Affected Version Matrix 1

VendorProduct Version RangeStatus
themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE ≤ 3.1.7 affected
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I. Basic Information for CVE-2026-4945

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Otter Blocks 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Otter Blocks是WordPress基金会开源的一个内容管理系统的可视化编辑组件。 WordPress Otter Blocks 3.1.7及之前版本存在授权问题漏洞，该漏洞源于'watch_checkout'函数缺少对用户控制密钥的验证，可能导致未经身份验证的攻击者操纵Stripe checkout URL中的product_id参数独立于price_id参数，以较低价格购买并获得高级产品权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE 0 ~ 3.1.7 -

II. Public POCs for CVE-2026-4945

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III. Intelligence Information for CVE-2026-4945

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Patches & Fixes for CVE-2026-4945 (2)

Security Blog Posts for CVE-2026-4945 (1)

Vendor Pages for CVE-2026-4945 (2)

IV. Related Vulnerabilities

Same product: Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
Same vendor: themeisle
Same weakness: CWE-639