CVE-2026-68493 PUBLISHED

Assigner: hackerone
Reserved: 30.07.2026 Published: 18.09.2026 Updated: 18.09.2026

After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships for a circle they are not a member of.

Metrics

CVSS Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 3.1

Product Status

Vendor Nextcloud
Product Server
Versions Default: unaffected
  • affected from 32.0.0 to 34.0.0 (incl.)

Credits

  • Melanie (milou) finder

References

Problem Types

  • CWE-639 Insecure Direct Object Reference (IDOR) CWE