CVE-2026-85350: CWE-287 Improper Authentication in UpsellWP
The UpsellWP WordPress plugin before 2.2.10 does not check that products added to the cart through a Frequently Bought Together campaign belong to that campaign, allowing unauthenticated users to buy arbitrary products at the campaign's discounted price.
AI Analysis
Technical Summary
CVE-2026-85350 is an improper authentication vulnerability (CWE-287) in the UpsellWP WordPress plugin before version 2.2.10. The plugin fails to verify that products added to the cart through a Frequently Bought Together campaign actually belong to that campaign. As a result, unauthenticated users can exploit this weakness to purchase arbitrary products at the campaign's discounted price.
Potential Impact
Unauthenticated attackers can bypass intended purchase restrictions and obtain products at discounted prices without authorization. This can lead to financial loss for merchants using the affected plugin versions.
Mitigation Recommendations
Upgrade the UpsellWP plugin to version 2.2.10 or later, where this authentication issue is fixed. No other mitigation guidance is provided. Patch status is confirmed by the version range indicating the vulnerability is fixed in 2.2.10.
CVE-2026-85350: CWE-287 Improper Authentication in UpsellWP
Description
The UpsellWP WordPress plugin before 2.2.10 does not check that products added to the cart through a Frequently Bought Together campaign belong to that campaign, allowing unauthenticated users to buy arbitrary products at the campaign's discounted price.
CVSS v3.1
Score 5.3medium
Affected software
UpsellWP
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-85350 is an improper authentication vulnerability (CWE-287) in the UpsellWP WordPress plugin before version 2.2.10. The plugin fails to verify that products added to the cart through a Frequently Bought Together campaign actually belong to that campaign. As a result, unauthenticated users can exploit this weakness to purchase arbitrary products at the campaign's discounted price.
Potential Impact
Unauthenticated attackers can bypass intended purchase restrictions and obtain products at discounted prices without authorization. This can lead to financial loss for merchants using the affected plugin versions.
Mitigation Recommendations
Upgrade the UpsellWP plugin to version 2.2.10 or later, where this authentication issue is fixed. No other mitigation guidance is provided. Patch status is confirmed by the version range indicating the vulnerability is fixed in 2.2.10.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-09-03T17:18:32.058Z
- State
- PUBLISHED
Threat ID: 6aacd5a355bf5e2cf5955f23
Added to database: 09/18/2026, 06:09:39 UTC
Last enriched: 09/18/2026, 06:17:34 UTC
Last updated: 09/18/2026, 22:55:21 UTC
Views: 6
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