CVE-2026-16027
Unauthenticated WebSocket-to-XAdES SSRF in Revenue Administration's E-Signature
CVSS Score
5.4
EPSS Score
0.2%
EPSS Percentile
8th
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.
| CWE | CWE-918 |
| Vendor | revenue administration |
| Product | e-signature |
| Published | Aug 7, 2026 |
| Last Updated | Aug 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
Revenue Administration / E-Signature
2.4.4.0 < 2.5.1.0
References
Credits
Sangsoo Jeong