SAML ePPN Attribute Validation Bypass in TÜBİTAK ULAKBİM's UlakPDF
Summary
| CVE | CVE-2026-88907 |
|---|---|
| State | PUBLISHED |
| Assigner | TR-CERT |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-24 13:17:15 UTC |
| Updated | 2026-09-24 19:36:51 UTC |
| Description | Incorrect Authorization vulnerability in TÜBİTAK ULAKBİM UlakPDF allows Authentication Bypass. This issue affects UlakPDF: through 09092026. |
Risk And Classification
Primary CVSS: v3.1 7.4 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.4 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | CNA | CVSS | 7.4 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | TBTAK ULAKBM | UlakPDF | affected 09092026 custom | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1170 | [email protected] | siberguvenlik.gov.tr | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Ahmed Emin Aygören (en)
There are currently no legacy QID mappings associated with this CVE.