Vulnerability · Published Sep 24, 2026 · Assigned by TR-CERT
CVE-2026-88907SAML ePPN Attribute Validation Bypass in TÜBİTAK ULAKBİM's UlakPDF
High 7.4
In plain English
A high-severity incorrect authorization in UlakPDF from TÜBİTAK ULAKBİM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.3%top 75.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Incorrect Authorization vulnerability in TÜBİTAK ULAKBİM UlakPDF allows Authentication Bypass. This issue affects UlakPDF: through 09092026.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TÜBİTAK ULAKBİM | UlakPDF | 0 – through 09092026 |
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1170 government-resource