CVE-2026-27579 Misconfiguration in realtime-collaboration-platform
Misconfigured CORS settings in CollabPlatform allow attackers to read sensitive user account data via authenticated cross-origin requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-27579?
CVE-2026-27579 is a high-severity vulnerability in karnop realtime-collaboration-platform, published on 21 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2026-27579?
How do I fix CVE-2026-27579?
No fix has been published for CVE-2026-27579 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-27579 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27579 exists.
Public exploit code: 2 proofs of concept on GitHub.