PT-2026-31307 · Wimi · Wimi Teamwork On-Premises

Noa Tchoumak + 1 · Published 2026-04-08 · Updated 2026-04-12 · CVE-2026-35023

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Name of the Vulnerable Software and Affected Versions Wimi Teamwork On-Premises versions prior to 8.2.0

Description Wimi Teamwork On-Premises versions prior to 8.2.0 contain an insecure direct object reference issue in the /preview.php endpoint. The item id parameter does not have sufficient authorization checks. Attackers can enumerate sequential item id values to access and retrieve image previews from other users' private or group conversations, leading to unauthorized disclosure of sensitive information.

Recommendations Update to version 8.2.0 or later.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-35023

Affected Products

Wimi Teamwork On-Premises

References · 5

• https://wimi-teamwork.com/en/product-update · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-35023 · Security Note
• https://vulncheck.com/advisories/wimi-teamwork-on-premises-idor-via-preview-php · Note
• https://twitter.com/CVEnew/status/2043295658942116130 · Twitter Post
• https://t.me/CVEtracker/50058 · Telegram Post