CVE-2026-16027 json
Unauthenticated WebSocket-to-XAdES SSRF in Revenue Administration's E-Signature
published 2026-08-07 3 mo ago modified 2026-10-23 16 d ago also EUVD-2026-54397
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Revenue Administration E-Signature 2.5.1.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
Affected products
- Revenue Administration E-Signature
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
siberguvenlik.gov.tr
/guvenlik-bildirimleri/detay/tr-26-0772
government-resource
Sources
- CVE List CVE-2026-16027
- NVD CVE-2026-16027
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