01 Record
CVE-2026-16038
MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways
CriticalPUBLISHEDCNA: WPScan
CNA base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
02 Description
MStore API < 4.21.0 - Unauthenticated Payment Bypass via Multiple Payment Gateways
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.41% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 35.7% of scored records. A rank, not a probability.
- NVD base score
- 9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- NVD analysis status
- Deferred. NVD last modified this record on 2026-08-26.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-08-07 06:00Z2 MO AGO
- Last updated
- 2026-08-07 18:06Z2 MO AGO
- Reserved
- 2026-07-17
- Assigning CNA
- WPScan
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.1)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-862Missing AuthorizationClass
- Data version
- 5.2
- Document digest
- 114e2f4b70e18b9649d191abc1f26730338644bf75b95e87c72e3cf4becaf6ea
05 Affected products
VendorProductVersionsPlatforms