VULNERABILITY INTELLIGENCE

CVE-2026-73576

CVSS score6.3 MEDIUM
EPSS probability0.33%
CISA KEVNot currently listed
Published2026-08-13
Last modified2026-08-28
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N

Description

In Zimbra Collaboration (ZCS) before 10.1.17, weak cryptographic key generation vulnerability exists in the OnlyOffice integration. The zimbraDocumentEditingJwtSecret is generated using an insecure random number generator, resulting in insufficient entropy. An attacker who obtains a JWT signed with the generated secret may be able to recover the JWT signing secret through offline brute-force, potentially enabling JWT forgery.

Weakness classification

  • cve@mitre.org: CWE-1241

Primary references