Hardcoded Cryptographic Keys and Weak IV Generation in linqi
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-321.
Summary
The linqi application contains hardcoded cryptographic keys. Additionally, the application uses a weak algorithm with a limited ASCII charset to dynamically generate Initialization Vectors (IVs) for AES/CBC encryption, making known-plaintext attacks feasible. An attacker with local access can leverage these vulnerabilities to decrypt sensitive obfuscated strings, including ConnectionString values containing database credentials from appsettings.json.
Why it matters now
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 |
|---|---|---|---|---|---|
| linqi GmbH | linqi | up to 1.4.8.5 | — | No fix listed | CNA |
- linqi Vendorlinqi GmbH Affected up to 1.4.8.5 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
linqi — linqi.help/en/reference/security/security-advisories
4 records Highest priority Priority LOW 4 LOW
Other records, highest priority first
- TI-2026-09793 Improper Authentication Bypass in linqi CDN File AccessPriority LOW 37
- TI-2026-09814 IDOR in Comment API Allows Cross-Process Comment Read and WritePriority LOW 31
- TI-2026-09794 Server-Side Request Forgery (SSRF) allowing Internal Network Probing in linqiPriority LOW 23
Timeline
- 2026-10-02 Threatist record created from CVE-2026-11347
- 2026-10-03 Alias added: GHSA-gg86-h3jm-9m46
References
More linqi GmbH vulnerabilities
- TI-2024-22349 An issue was discovered in linqi before 1.4.0.1 on Windows. CVSS 3.1CRITICAL 9.8
- TI-2024-22344 An issue was discovered in linqi before 1.4.0.1 on Windows. CVSS 3.1CRITICAL 9.8
- TI-2024-22346 An issue was discovered in linqi before 1.4.0.1 on Windows. CVSS 3.1HIGH 7.5
- TI-2026-09793 Improper Authentication Bypass in linqi CDN File Access CVSS 4.0MEDIUM 6.9
- TI-2026-09814 IDOR in Comment API Allows Cross-Process Comment Read and Write CVSS 4.0HIGH 7.1
- TI-2024-22345 An issue was discovered in linqi before 1.4.0.1 on Windows. CVSS 3.1MEDIUM 5.9
Sources
- CVE-2026-11347 · CVE Program
- CVE-2026-11347 · NVD
- FIRST EPSS
- GHSA-gg86-h3jm-9m46 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences