Vulnerability · Published Jun 5, 2026 · Assigned by linqi

CVE-2026-11347Hardcoded Cryptographic Keys and Weak IV Generation in linqi

High 8.5

In plain English

A high-severity security flaw in linqi from linqi GmbH. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities).

Severity (CVSS 4.0)8.5High

Exploit odds (30 days)<0.1%top 99.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
linqi GmbH	linqi	0 – through 1.4.8.5

Weakness: CWE-321, CWE-338 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://linqi.help/en/reference/security/security-advisories/#security-advisory-hardcoded-cryptographic-keys-and-weak-iv-generation-in-linqi vendor-advisory