EUVD-2026-54397
GHSA-jxrw-hc36-36pw
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Network-reachable SSRF requiring user interaction to trigger; limited read/write impact to internal services, no availability loss, scope unchanged.
Primary rating from Vendor (TR-CERT).
CVSS VectorVendor: TR-CERT
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Server-Side Request Forgery (SSRF) in Revenue Administration Türkiye's E-Signature (versions 2.4.4.0 through before 2.5.1.0) enables network-accessible attackers to coerce the application server into making arbitrary outbound HTTP requests by inducing a user to interact with crafted content. The partial confidentiality and integrity impact (C:L/I:L per CVSS) indicates an attacker could reach internal services or read limited internal responses, but cannot fully compromise the host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that a victim user interact with attacker-controlled content (UI:R per CVSS), such as opening a crafted file or visiting a malicious link while the E-Signature application processes it - exploitation is not passive. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.4 (Medium) is driven by Network attack vector, Low complexity, no privileges required, but User Interaction required, with limited confidentiality and integrity impact and no availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Türkiye's E-Signature to version 2.5.1.0 or later, which resolves this SSRF vulnerability per the vendor patch confirmed by TR-CERT. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-918 – Server-Side Request Forgery (SSRF)
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External POC / Exploit Code
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