TI-2026-04309 Aliases CVE-2026-4945 GHSA-pvh2-45c7-fq5c

Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass

LOW 30CWE-639Published 2026-09-07 · Updated 2026-09-08

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00391 33rd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
themeisle	Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE	up to 3.1.7	—	No fix listed	CNA

Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE Vendorthemeisle Affected up to 3.1.7 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:themeisle:otter_blocks::::::::	—	—	themeisle

cpe:2.3:a:themeisle:otter_blocks:*:*:*:*:*:*:*:* Versions — — ·themeisle

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-4945
2026-10-03 Alias added: GHSA-pvh2-45c7-fq5c

References

Other 5

TI-2017-14315 WordPress Insert PHP Plugin < 3.3.1 PHP Code Injection via REST API CVSS 4.0CRITICAL 9.3
TI-2023-02146 Otter - Gutenberg Blocks < 2.2.6 - Author+ PHAR Deserialization CVSS 3.1HIGH 8.8
TI-2023-20819 WordPress Redirection for Contact Form 7 plugin <= 2.9.2 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
TI-2019-12631 A blind SSRF vulnerability exists in the Visualizer plugin before 3.3.1 for WordPress via… CVSS 3.1CRITICAL 10.0
TI-2023-02115 Product Addons & Fields for WooCommerce < 32.0.7 - Reflected Cross-Site Scripting CVSS 3.1MEDIUM 6.1
TI-2022-04265 RSS Aggregator by Feedzy < 4.1.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4

See all 135 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences