Auth bypass in Cloud Solutions Sas Wimi Teamwork
CVE-2026-35023
Wimi Teamwork On-Premises versions prior to 8.2.0 contain an insecure direct object reference vulnerability in the preview.php endpoint where the item_id parameter lacks proper authorization checks. Attackers can enumerate sequential item_id values to access and retrieve image previews from other users' private or group conversations, resulting in unauthorized disclosure of sensitive information.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Cloud Solutions Sas Wimi Teamwork — versions 0
- Wimi-Teamwork
Weakness classification (CWE)
References
- www.wimi-teamwork.com/en/product-update (release-notes, Release Notes, patch)
- www.vulncheck.com/advisories/wimi-teamwork-on-premises-idor-via-preview-php (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-35023?
- CVE-2026-35023 is a medium-severity vulnerability in Cloud Solutions Sas Wimi Teamwork, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-04-08.
- How severe is CVE-2026-35023?
- Medium severity. CVSS v3 base score is 4.3 out of 10.