{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-88907", "assignerOrgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21", "state": "PUBLISHED", "assignerShortName": "TR-CERT", "dateReserved": "2026-09-10T12:21:09.545Z", "datePublished": "2026-09-24T12:46:21.079Z", "dateUpdated": "2026-09-24T14:41:39.471Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "ca940d4e-fea4-4aa2-9a58-591a58b1ce21", "shortName": "TR-CERT", "dateUpdated": "2026-09-24T12:46:21.079Z" }, "title": "SAML ePPN Attribute Validation Bypass in TÜBİTAK ULAKBİM's UlakPDF", "datePublic": "2026-09-24T12:41:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-115", "descriptions": [ { "lang": "en", "value": "CAPEC-115 Authentication Bypass" } ] } ], "affected": [ { "vendor": "TÜBİTAK ULAKBİM", "product": "UlakPDF", "versions": [ { "status": "affected", "version": "0", "lessThanOrEqual": "09092026", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "descriptions": [ { "lang": "en", "value": "Incorrect Authorization vulnerability in TÜBİTAK ULAKBİM UlakPDF allows Authentication Bypass.\n\nThis issue affects UlakPDF: through 09092026.", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "Incorrect Authorization vulnerability in TÜBİTAK ULAKBİM UlakPDF allows Authentication Bypass.

This issue affects UlakPDF: through 09092026.

" } ] } ], "references": [ { "url": "https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1170", "tags": [ "government-resource" ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseSeverity": "HIGH", "baseScore": 7.4, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N" } } ], "credits": [ { "lang": "en", "value": "Ahmed Emin Aygören", "type": "finder" } ], "source": { "defect": [ "TR-26-1170" ], "advisory": "TR-26-1170", "discovery": "UNKNOWN" }, "x_generator": { "engine": "Vulnogram 1.0.5" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-24T14:41:31.719339Z", "id": "CVE-2026-88907", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-24T14:41:39.471Z" } } ] } }