CVE-2021-27963

8.2 highEPSS 2.4%

High (8.2) in sfcyazilim sonlogger. EPSS 2.4% chance of exploitation in the next 30 days.

SonLogger before 6.4.1 is affected by user creation with any user permissions profile (e.g., SuperAdmin). An anonymous user can send a POST request to /User/saveUser without any authentication or session header.

Severity

CVSS 3.1

8.2 high

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

EPSS: 2.4% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2021-03-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

sfcyazilim:sonlogger

References

https://github.com/erberkan/SonLogger-vulns
https://www.sonlogger.com/releasenotes
https://github.com/erberkan/SonLogger-vulns
https://www.sonlogger.com/releasenotes

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