CVE-2026-71492

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{"affected": [{"affectedData": [{"product": "banks", "vendor": "masci", "versions": [{"status": "affected", "version": "< 2.4.5"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Banks generates meaningful LLM prompts using a simple template language. Prior to version 2.4.5, DirectoryPromptRegistry.set() in src/banks/registries/directory.py interpolates attacker-controlled Prompt.name and Prompt.version values into a Path without canonicalization or containment validation. Relative traversal such as ../victim/foo and an absolute Prompt.name can escape or discard the configured registry root, while overwrite=True permits replacement of existing target files. The poisoned name is persisted in index.json and reconstructed by _load(), allowing the out-of-root path to survive later registry loads. An application that forwards request data into these fields can therefore write Prompt.raw bytes to attacker-chosen paths writable by the application process. This issue is fixed in version 2.4.5."}, {"lang": "es", "value": "Banks genera prompts de LLM significativos utilizando un lenguaje de plantilla simple. Antes de la versi\u00f3n 2.4.5, DirectoryPromptRegistry.set() en src/banks/registries/directory.py interpola valores de Prompt.name y Prompt.version controlados por el atacante en una ruta sin canonicalizaci\u00f3n ni validaci\u00f3n de contenci\u00f3n. La traversi\u00f3n relativa, como ../victim/foo, y un Prompt.name absoluto pueden escapar o descartar la ra\u00edz del registro configurada, mientras que overwrite=True permite el reemplazo de archivos de destino existentes. El nombre envenenado se persiste en index.json y es reconstruido por _load(), permitiendo que la ruta fuera de la ra\u00edz sobreviva a cargas posteriores del registro. Una aplicaci\u00f3n que reenv\u00eda datos de solicitud a estos campos puede, por lo tanto, escribir bytes de Prompt.raw en rutas elegidas por el atacante que sean escribibles por el proceso de la aplicaci\u00f3n. Este problema est\u00e1 solucionado en la versi\u00f3n 2.4.5."}], "id": "CVE-2026-71492", "lastModified": "2026-10-18T20:10:00.110", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-71492", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-20T17:10:39.955134Z", "version": "2.0.3"}}]}, "published": "2026-08-20T17:19:40.930", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/masci/banks/commit/a215f6d779966945c56e0af5abed1ae5916fd9d3"}, {"source": "security-advisories@github.com", "url": "https://github.com/masci/banks/pull/77"}, {"source": "security-advisories@github.com", "url": "https://github.com/masci/banks/releases/tag/v2.4.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/masci/banks/security/advisories/GHSA-x8wg-4xgc-vr54"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/masci/banks/security/advisories/GHSA-x8wg-4xgc-vr54"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{"bugzilla": {"description": "banks: Banks: Arbitrary file write via path traversal", "id": "2520536", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520536"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-22", "details": ["Banks generates meaningful LLM prompts using a simple template language. Prior to version 2.4.5, DirectoryPromptRegistry.set() in src/banks/registries/directory.py interpolates attacker-controlled Prompt.name and Prompt.version values into a Path without canonicalization or containment validation. Relative traversal such as ../victim/foo and an absolute Prompt.name can escape or discard the configured registry root, while overwrite=True permits replacement of existing target files. The poisoned name is persisted in index.json and reconstructed by _load(), allowing the out-of-root path to survive later registry loads. An application that forwards request data into these fields can therefore write Prompt.raw bytes to attacker-chosen paths writable by the application process. This issue is fixed in version 2.4.5.", "A flaw was found in Banks. The `DirectoryPromptRegistry.set()` function improperly handles attacker-controlled `Prompt.name` and `Prompt.version` values. This allows for path traversal, enabling an attacker to write arbitrary files outside the intended registry root. This vulnerability could lead to unauthorized modification of files on the system where Banks is running."], "name": "CVE-2026-71492", "public_date": "2026-08-20T16:13:55Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-71492\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-71492\nhttps://github.com/masci/banks/commit/a215f6d779966945c56e0af5abed1ae5916fd9d3\nhttps://github.com/masci/banks/pull/77\nhttps://github.com/masci/banks/releases/tag/v2.4.5\nhttps://github.com/masci/banks/security/advisories/GHSA-x8wg-4xgc-vr54"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.4.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "banks", "source": "cna", "vendor": "masci"}, "product": "banks", "vendor": "masci"}], "created": "2026-08-20T18:00:03.693552+00:00", "updated": "2026-08-20T21:00:05.521223+00:00", "vendors": ["masci", "masci$PRODUCT$banks"]}