SSRF in Revenue Administration E-signature

CVE-2026-16027

Server-Side request forgery (SSRF) vulnerability in Revenue Administration Türkiye's E-Signature allows Server Side Request Forgery. This issue affects Türkiye's E-Signature: from 2.4.4.0 before 2.5.1.0.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16027?
CVE-2026-16027 is a medium-severity vulnerability in Revenue Administration E-signature, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.4/10. Published 2026-08-07.
How severe is CVE-2026-16027?
Medium severity. CVSS v3 base score is 5.4 out of 10.