CVE-2026-16027

{"id": "CVE-2026-16027", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16027", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-07T15:23:01.841632Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "iletisim@usom.gov.tr", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 2.8}]}, "affected": [{"source": "iletisim@usom.gov.tr", "affectedData": [{"vendor": "Revenue Administration", "product": "E-Signature", "versions": [{"status": "affected", "version": "2.4.4.0", "lessThan": "2.5.1.0", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-07T08:16:46.023", "references": [{"url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0772", "source": "iletisim@usom.gov.tr"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "iletisim@usom.gov.tr", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "Server-Side request forgery (SSRF) vulnerability in Revenue Administration T\u00fcrkiye's E-Signature allows Server Side Request Forgery.\n\nThis issue affects T\u00fcrkiye's E-Signature: from 2.4.4.0 before 2.5.1.0."}], "lastModified": "2026-08-26T16:51:19.490", "sourceIdentifier": "iletisim@usom.gov.tr"}