Authorization Bypass in Countly Server's DBViewer
CVE-2026-87803

7.1HIGH

Key Information:

Vendor

Countly

Status
Countly-server
Vendor
CVE Published:
10 September 2026

What is CVE-2026-87803?

An authorization bypass vulnerability in Countly Server's DBViewer allows non-admin users to inject unauthorized operators into aggregation queries. This occurs due to inadequate checks in the aggregation stage sanitizer, permitting users with read permissions to perform cross-collection joins. Consequently, sensitive information, including password-reset tokens, can be exposed, leading to potential account takeovers.

Affected Version(s)

countly-server 0

References

https://github.com/Countly/countly-server/pull/7868

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Catalin Iovita (Snyk Security Research)
.