Otter Blocks <= 3.1.7 — Missing Authorization to Unauthenticated Purchase Verification Bypass
CVE-2026-4945Published · Updated Action summary
Affected: ≤3.1.7Update to 3.1.8 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE otter-blocks
- Affected≤ 3.1.7
- Patched in3.1.8
Update to 3.1.8 or newer.
You are affected if you run ≤ 3.1.7. Version 3.1.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 3.1.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Dmitrii Ignatyev.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE
All 20| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting <3.2.8Update to 3.2.8 | CVE-2026-109933 | |
| Medium5.3 | Missing Authorization <3.2.8Update to 3.2.8 | CVE-2026-109935 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting <3.2.8Update to 3.2.8 | CVE-2026-109936 | |
| Medium5.3 | 3.2.7 - Missing Authorization 3.1.1 – 3.2.7Update to 3.2.8 | CVE-2026-109934 | |
| Medium4.7 | Unauthenticated Open Redirect ≤3.2.2Update to 3.2.3 | CVE-2026-109937 |
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
<3.2.8Update to 3.2.8
- Medium5.3Missing Authorization
<3.2.8Update to 3.2.8
- High7.2Unauthenticated Stored Cross-Site Scripting
<3.2.8Update to 3.2.8
- Medium5.33.2.7 - Missing Authorization
3.1.1 – 3.2.7Update to 3.2.8
- Medium4.7Unauthenticated Open Redirect
≤3.2.2Update to 3.2.3
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.