{ "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": "2026-07-24T12:05:31.563Z" }, "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" } }, { "affected": [ { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:exploit_intelligence:0" ], "defaultStatus": "affected", "packageName": "exploit-intelligence-tech-preview/vulnerability-analysis-rhel9", "product": "Exploit Intelligence", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_lightspeed" ], "defaultStatus": "unaffected", "packageName": "openshift-lightspeed/lightspeed-ocp-rag-rhel9", "product": "OpenShift Lightspeed", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_lightspeed" ], "defaultStatus": "unaffected", "packageName": "openshift-lightspeed/lightspeed-service-api-rhel9", "product": "OpenShift Lightspeed", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_lightspeed" ], "defaultStatus": "unaffected", "packageName": "openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9", "product": "OpenShift Lightspeed", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:ansible_automation_platform:2" ], "defaultStatus": "affected", "packageName": "ansible-automation-platform-25/lightspeed-chatbot-rhel8", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat" } ], "datePublic": "2026-05-26T20:46:56.002Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in banks. This vulnerability, known as Server-Side Template Injection (SSTI), allows a remote attacker to achieve Remote Code Execution (RCE) on the host system. This occurs when applications using banks pass user-supplied strings directly as template arguments to the Prompt() function, which then renders these templates in an unsandboxed environment." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "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" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-917", "description": "Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-44209" }, { "name": "RHBZ#2481713", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2481713" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44209.json" } ], "timeline": [ { "lang": "en", "time": "2026-05-26T22:01:09.917Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-05-26T20:46:56.002Z", "value": "Made public." } ], "title": "banks: banks: Remote Code Execution via Server-Side Template Injection", "workarounds": [ { "lang": "en", "value": "To mitigate this issue, applications utilizing the `banks` library should avoid passing user-controlled data into `Prompt()` sink. This prevents malicious input from being interpreted as template code, thereby reducing the risk of Server-Side Template Injection and subsequent remote code execution. Recommended to update to patched version." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-24T12:05:31.563Z" } } ] } }