What’s Vulnerable › Vulnerabilities

CVE-2021-28938

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-04-13 · updated 2026-06-17

Description

Siren Federate before 6.8.14-10.3.9, 6.9.x through 7.6.x before 7.6.2-20.2, 7.7.x through 7.9.x before 7.9.3-21.6, 7.10.x before 7.10.2-22.2, and 7.11.x before 7.11.2-23.0 can leak user information across thread contexts. This occurs in opportunistic circumstances when there is concurrent query execution by a low-privilege user and a high-privilege user. The former query might run with the latter query's privileges.

Affected products

• Siren Federate: before 6.8.14-10.3.9; from 7.3.2-19.0 before 7.6.2-20.2; from 7.7.1-20.0 before 7.9.3-21.6; from 7.10.1-22.0 before 7.10.2-22.2 — fixed in 6.8.14-10.3.9, 7.10.2-22.2, 7.6.2-20.2, 7.9.3-21.6

How to fix

Upgrade to a fixed version: Siren Federate 6.8.14-10.3.9, 7.10.2-22.2, 7.6.2-20.2, 7.9.3-21.6. Check the vendor advisory for mitigations.

References

• https://docs.siren.io/siren-federate-user-guide/22/siren-federate/release-notes.html
• https://docs.siren.io/siren-federate-user-guide/22/siren-federate/release-notes.html

Get alerted when CVE-2021-28938 or the next vulnerability affects your stack