CVE-2026-25063

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The `gradle-completion` script for Bash fails to adequately sanitize Gradle task names and task descriptions, allowing command injection via a malicious Gradle build file when the user completes a command in Bash (without them explicitly running any task in the build). For example, given a task description that includes a string between backticks, then that string would be evaluated as a command when presenting the task description in the completion list. While task execution is the core feature of Gradle, this inherent execution may lead to unexpected outcomes. The vulnerability does not affect zsh completion. The first patched version is 9.3.1. As a workaround, it is possible and effective to temporarily disable bash completion for Gradle by removing `gradle-completion` from `.bashrc` or `.bash_profile`."}, {"lang": "es", "value": "gradle-completion proporciona soporte de autocompletado para Bash y Zsh para Gradle. Una vulnerabilidad de inyecci\u00f3n de comandos fue encontrada en gradle-completion hasta la versi\u00f3n 9.3.0 inclusive que permite la ejecuci\u00f3n de c\u00f3digo arbitrario cuando un usuario activa el autocompletado de tabulaci\u00f3n de Bash en un proyecto que contiene un archivo de compilaci\u00f3n Gradle malicioso. El script 'gradle-completion' para Bash no logra sanitizar adecuadamente los nombres y descripciones de las tareas de Gradle, permitiendo la inyecci\u00f3n de comandos a trav\u00e9s de un archivo de compilaci\u00f3n Gradle malicioso cuando el usuario completa un comando en Bash (sin que ejecuten expl\u00edcitamente ninguna tarea en la compilaci\u00f3n). Por ejemplo, dada una descripci\u00f3n de tarea que incluye una cadena entre comillas invertidas, entonces esa cadena ser\u00eda evaluada como un comando al presentar la descripci\u00f3n de la tarea en la lista de autocompletado. Si bien la ejecuci\u00f3n de tareas es la caracter\u00edstica principal de Gradle, esta ejecuci\u00f3n inherente puede llevar a resultados inesperados. La vulnerabilidad no afecta al autocompletado de zsh. La primera versi\u00f3n parcheada es la 9.3.1. Como soluci\u00f3n alternativa, es posible y efectivo deshabilitar temporalmente el autocompletado de Bash para Gradle eliminando 'gradle-completion' de '.bashrc' o '.bash_profile'."}], "id": "CVE-2026-25063", "lastModified": "2026-06-17T10:24:04.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.3, "baseSeverity": "HIGH", "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": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "HIGH", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:H/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-25063", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-01-30T14:43:48.091488Z", "version": "2.0.3"}}]}, "published": "2026-01-29T22:15:55.947", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/gradle/gradle-completion/commit/ecacc32bb882210e5d37cd79a74de1af0d0ccad7"}, {"source": "security-advisories@github.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://github.com/gradle/gradle-completion/security/advisories/GHSA-qggc-44r3-cjgv"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.vicarius.io/vsociety/posts/cve-2026-25063-detection-script-command-injection-vulnerability-in-bash-completion-component"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mitigation", "Third Party Advisory"], "url": "https://www.vicarius.io/vsociety/posts/cve-2026-25063-mitigation-script-command-injection-vulnerability-in-bash-completion-component"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-157"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-78"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-18T14:30:56.217535+00:00", "value": {"mitigation_remediation": ["Update the gradle-completion script to version 9.3.1 or newer, which removes the sanitization flaw.", "As a temporary measure, comment out or delete the line that sources gradle-completion from your .bashrc or .bash_profile, effectively disabling Bash auto\u2011completion for Gradle until the patch can be applied.", "Ensure that only trusted users have write access to directories that may contain Gradle build files used with auto\u2011completion, or otherwise validate build files before they are executed."], "summary": {"action": "Patch Immediately", "impact": "Arbitrary code execution via Bash command injection"}, "threat_synthesis": {"affected_systems": "Systems that use the Gradle CLI with Bash completion enabled \u2013 any user who sources gradle-completion in their .bashrc or .bash_profile \u2013 are affected when the script version is 9.3.0 or earlier. The patch first appears in gradle-completion 9.3.1, and the issue does not exist in the newer version or in the Zsh completion mechanism.", "description_and_impact": "The vulnerability resides in the gradle-completion script used for Bash auto\u2011completion. By injecting a malicious Gradle build file that contains backticks in a task description, a local user who triggers Bash completion (for example, by pressing Tab) can cause the shell to execute arbitrary commands. This leads to total loss of confidentiality, integrity, and availability on the victim\u2019s user account. The flaw satisfies CWE\u201178 (OS Command Injection) and CWE\u2011157 (Invalid Input Predicate).", "risk_and_exploitability": "The CVSS base score is 8.3, classifying it as high severity, but the EPSS score is under 1\u202f%, indicating a very low rate of exploitation in the wild. An attacker must have local access to the machine, able to create or modify a Gradle build file in the directory where Bash auto\u2011completion is invoked. No remote exploitation or network attack is possible. The vulnerability is not in the CISA KEV catalog, further suggesting that active exploitation is unlikely."}}}}, "created": "2026-01-30T08:42:34.971705+00:00", "updated": "2026-04-18T14:45:03.110645+00:00", "vendors": ["gradle", "gradle$PRODUCT$gradle-completion"]}