{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-44209", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-05T15:13:47.571Z", "datePublished": "2026-05-26T20:46:56.002Z", "dateUpdated": "2026-05-28T14:07:44.481Z"}, "containers": {"cna": {"title": "Banks: Critical Remote Code Execution (RCE) via Jinja2 SSTI", "problemTypes": [{"descriptions": [{"cweId": "CWE-1336", "lang": "en", "description": "CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp"}, {"name": "https://github.com/masci/banks/pull/74", "tags": ["x_refsource_MISC"], "url": "https://github.com/masci/banks/pull/74"}], "affected": [{"vendor": "masci", "product": "banks", "versions": [{"version": "< 2.4.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-26T20:46:56.002Z"}, "descriptions": [{"lang": "en", "value": "Banks generates meaningful LLM prompts using a template language that makes sense. Prior to 2.4.2, banks uses jinja2.Environment() (unsandboxed) to render prompt templates. Applications that pass user-supplied strings as the template argument to Prompt() are vulnerable to Server-Side Template Injection (SSTI), which can lead to Remote Code Execution (RCE) on the host system. This vulnerability is fixed in 2.4.2."}], "source": {"advisory": "GHSA-gphh-9q3h-jgpp", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-28T14:07:18.330651Z", "id": "CVE-2026-44209", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-28T14:07:44.481Z"}}]}}

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{"affected": [{"affectedData": [{"product": "banks", "vendor": "masci", "versions": [{"status": "affected", "version": "< 2.4.2"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Banks generates meaningful LLM prompts using a template language that makes sense. Prior to 2.4.2, banks uses jinja2.Environment() (unsandboxed) to render prompt templates. Applications that pass user-supplied strings as the template argument to Prompt() are vulnerable to Server-Side Template Injection (SSTI), which can lead to Remote Code Execution (RCE) on the host system. This vulnerability is fixed in 2.4.2."}], "id": "CVE-2026-44209", "lastModified": "2026-06-17T10:50:21.683", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44209", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-28T14:07:18.330651Z", "version": "2.0.3"}}]}, "published": "2026-05-26T21:16:37.620", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/masci/banks/pull/74"}, {"source": "security-advisories@github.com", "url": "https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/masci/banks/security/advisories/GHSA-gphh-9q3h-jgpp"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1336"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.4.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "banks", "source": "cna", "vendor": "masci"}, "product": "banks", "vendor": "masci"}], "created": "2026-05-26T22:30:18.412549+00:00", "updated": "2026-05-27T10:08:28.751369+00:00", "vendors": ["masci", "masci$PRODUCT$banks"]}