SAML ePPN Attribute Validation Bypass in TÜBİTAK ULAKBİM's UlakPDF
Priority LOW 34CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
Incorrect Authorization vulnerability in TÜBİTAK ULAKBİM UlakPDF allows Authentication Bypass. This issue affects UlakPDF: through 09092026.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00315 24th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TÜBİTAK ULAKBİM | UlakPDF | up to 09092026 | — | No fix listed | CNA |
- UlakPDF VendorTÜBİTAK ULAKBİM Affected up to 09092026 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-88907
- 2026-10-03 Alias added: GHSA-974p-3f2w-mrv2
References
More TÜBİTAK ULAKBİM vulnerabilities
- TI-2026-60290 Admin Access Bypass via Header Fallback in TÜBİTAK ULAKBİM's UlakPDF CVSS 3.1MEDIUM 6.8
Sources
- CVE-2026-88907 · CVE Program
- CVE-2026-88907 · NVD
- FIRST EPSS
- GHSA-974p-3f2w-mrv2 · GitHub Advisory Database · CC BY 4.0
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