{"id":"CVE-2026-11347","state":"PUBLISHED","title":"Hardcoded Cryptographic Keys and Weak IV Generation in linqi","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.","publishedAt":"2026-06-05T10:18:35.703Z","updatedAt":"2026-06-05T20:22:25.302Z","severity":{"score":8.5,"label":"High","version":"4.0","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","source":"linqi"},"assigner":"linqi","products":["linqi GmbH linqi"],"affected":[{"vendor":"linqi GmbH","product":"linqi","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.4.8.5","versionType":"custom"}]}],"references":["https://linqi.help/en/reference/security/security-advisories/#security-advisory-hardcoded-cryptographic-keys-and-weak-iv-generation-in-linqi"],"weaknesses":["CWE-321","CWE-338"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/11xxx/CVE-2026-11347.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-11347","state":"PUBLISHED","datePublished":"2026-06-05T10:18:35.703Z","dateUpdated":"2026-06-05T20:22:25.302Z","assignerShortName":"linqi","assignerOrgId":"86c47df7-7d28-48da-920a-6423c52fd3da","dateReserved":"2026-06-05T08:52:47.208Z"},"containers":{"cna":{"title":"Hardcoded Cryptographic Keys and Weak IV Generation in linqi","descriptions":[{"lang":"en","value":"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":[{"vendor":"linqi GmbH","product":"linqi","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.4.8.5","versionType":"custom"}]}],"references":[{"url":"https://linqi.help/en/reference/security/security-advisories/#security-advisory-hardcoded-cryptographic-keys-and-weak-iv-generation-in-linqi","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":8.5,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-321","lang":"en","description":"CWE-321: Use of Hard-coded Cryptographic Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-338","lang":"en","description":"CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","type":"CWE"}]}],"providerMetadata":{"shortName":"linqi","orgId":"86c47df7-7d28-48da-920a-6423c52fd3da","dateUpdated":"2026-06-05T11:51:48.757Z"},"credits":[{"lang":"en","value":"Ianis BERNARD from NATO Cyber Security Centre (NCSC)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-05T20:22:15.334464Z","id":"CVE-2026-11347","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-05T20:22:25.302Z"}}]}}}