CVE-2026-27579CWE-346CWE-942

CollabPlatform : CORS Misconfiguration Allows Arbitrary Origin With Credentials Leading to Authenticated Account Data Exposure

High · published February 21, 2026

CVSS v3.1
7.4
EPSS
0%
Percentile
11.9
In the wild
Unconfirmed
What it is

CollabPlatform is a full-stack, real-time doc collaboration platform. In all versions of CollabPlatform, the Appwrite project used by the application is misconfigured to allow arbitrary origins in CORS responses while also permitting credentialed requests. An attacker-controlled domain can issue authenticated cross-origin requests and read sensitive user account information, including email address, account identifiers, and MFA status. The issue did not have a fix at the time of publication.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00220 · 11.9th percentile
Weaknesses
CWE-346 · Origin Validation Error; CWE-942 · Permissive Cross-domain Security Policy with Untrusted Domains
Published
2026-02-21T10:22Z
EPSS history
Timeline
  • 21 FEB 10:22Z
    CollabPlatform : CORS Misconfiguration Allows Arbitrary Origin With Credentials Leading to Authenticated Account Data Exposure
    cvelistv5