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CVE-2026-121870 Simpler Checkout < 1.5.4 - Subscriber+ Privilege Escalation via Forged Auto-Login Token

7.5 highEPSS 0.3%

High (7.5) in unknown simpler checkout. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
The Simpler Checkout WordPress plugin before 1.5.4 does not properly restrict who can create orders and checks its automatic login link with a key that stays empty until the store owner configures the Simpler Checkout WordPress plugin before 1.5.4, allowing subscribers on stores that have not completed setup to log in as an administrator.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 18th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-11. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-269 Improper Privilege Management
OWASP Top 10
A06:2025 Insecure Design
Published
Modified
Assigned by
WPScan (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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CVE-2026-121870

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Affected

  • unknown:simpler checkout

Attack patterns (CAPEC)

  • CAPEC-58 Restful Privilege Elevation Likelihood: High · Severity: High
  • CAPEC-122 Privilege Abuse Likelihood: High · Severity: Medium
  • CAPEC-233 Privilege Escalation

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

History

  1. Scored 7.5 high
  2. The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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