CVE-2026-4945 json
Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass
published 2026-09-07 2 mo ago modified 2026-09-08 2 mo ago also EUVD-2026-72366
- cvss
- 5.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
Affected products
- themeisle Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/7ecb9f61-68d5-4c70-8d7d-e4fb067fcff9?source=cve
- plugins.trac.wordpress.org /browser/otter-blocks/trunk/inc/render/class-stripe-checkout-block.php#L69
- plugins.trac.wordpress.org /browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L234
- plugins.trac.wordpress.org /browser/otter-blocks/trunk/inc/plugins/class-stripe-api.php#L304
- plugins.trac.wordpress.org /changeset/3496611/
Sources
- CVE List CVE-2026-4945
- NVD CVE-2026-4945
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.