Auth bypass in Meari Alibaba Oss Hosted
CVE-2026-33359
In Meari IoT Cloud alert image storage on Alibaba OSS (latest observed; storage service version not disclosed), motion snapshots are retrievable without authentication, signed URLs, or expiry enforcement. URLs function as direct object references and remain valid beyond expected operational windows.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Meari Alibaba Oss Hosted — versions April, 2026
Weakness classification (CWE)
References
- 44488dab-36db-4358-99f9-bc116477f914 (technical-description)
- 44488dab-36db-4358-99f9-bc116477f914 (third-party-advisory)
Frequently asked questions
- What is CVE-2026-33359?
- CVE-2026-33359 is a high-severity vulnerability in Meari Alibaba Oss Hosted, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-05-11.
- How severe is CVE-2026-33359?
- High severity. CVSS v3 base score is 7.5 out of 10.