{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/products/gitpython--3.1.56/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["GitPython (\u003c= 3.1.56)"],"_cs_severities":["high"],"_cs_tags":["injection","python","gitpython","supply-chain"],"_cs_type":"advisory","_cs_vendors":["GitPython"],"content_html":"\u003cp\u003eGitPython, a library widely used for interacting with Git repositories in Python applications, contains critical argument injection vulnerabilities in its \u003ccode\u003eIndexFile.checkout()\u003c/code\u003e and \u003ccode\u003eTagReference.create()\u003c/code\u003e methods. These methods forward user-provided keyword arguments (\u003ccode\u003e**kwargs\u003c/code\u003e) directly to the underlying \u003ccode\u003egit\u003c/code\u003e command-line utility without sufficient validation of dangerous options.\u003c/p\u003e\n\u003cp\u003eAn attacker capable of influencing the arguments passed to these methods can trigger unauthorized filesystem operations. In \u003ccode\u003eIndexFile.checkout()\u003c/code\u003e, the lack of filtering for the \u003ccode\u003e--prefix\u003c/code\u003e option allows for arbitrary file overwriting, potentially resulting in remote code execution if the attacker can overwrite configuration files, SSH keys, or application scripts. In \u003ccode\u003eTagReference.create()\u003c/code\u003e, the lack of filtering for \u003ccode\u003e-F\u003c/code\u003e or \u003ccode\u003e--file\u003c/code\u003e options allows an attacker to read the contents of arbitrary files accessible to the application's service account, returning the data through the library's tag message interface. This issue persists in all versions of GitPython up to and including 3.1.56.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a target application using a vulnerable version of GitPython (3.1.56 or earlier).\u003c/li\u003e\n\u003cli\u003eThe application exposes an interface where user-controlled input influences arguments passed to \u003ccode\u003eIndexFile.checkout()\u003c/code\u003e or \u003ccode\u003eTagReference.create()\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a payload containing dangerous git flags (e.g., \u003ccode\u003e--prefix\u003c/code\u003e for overwrite or \u003ccode\u003e--file\u003c/code\u003e for read).\u003c/li\u003e\n\u003cli\u003eThe application processes the malicious input and passes the flags as keyword arguments to the vulnerable GitPython method.\u003c/li\u003e\n\u003cli\u003eGitPython internally invokes the \u003ccode\u003egit\u003c/code\u003e binary, appending the attacker's flags to the command line.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003egit\u003c/code\u003e process executes with the privileges of the application's service account, applying the malicious flags to the filesystem.\u003c/li\u003e\n\u003cli\u003eFinal impact: The attacker achieves unauthorized file read disclosure or arbitrary file overwrite, potentially leading to system compromise.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation allows attackers to overwrite critical system files or exfiltrate sensitive data. An attacker could overwrite files such as \u003ccode\u003e~/.ssh/authorized_keys\u003c/code\u003e or \u003ccode\u003epost-checkout\u003c/code\u003e hooks to achieve persistence and code execution. The file read vulnerability enables the exfiltration of credentials, configuration files, and secrets. Because these operations occur at the privilege level of the application running the GitPython library, the potential damage is significant in both cloud-native environments and CI/CD pipelines.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade GitPython to the latest version as soon as a patch is available.\u003c/li\u003e\n\u003cli\u003eImplement a wrapper for all GitPython calls that use \u003ccode\u003e**kwargs\u003c/code\u003e to explicitly validate against a deny-list of dangerous git options like \u003ccode\u003e--prefix\u003c/code\u003e, \u003ccode\u003e--file\u003c/code\u003e, \u003ccode\u003e-F\u003c/code\u003e, \u003ccode\u003e-s\u003c/code\u003e, and \u003ccode\u003e-u\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eEnforce strict input validation on all user-supplied data that reaches GitPython methods to prevent the injection of arbitrary git flags.\u003c/li\u003e\n\u003cli\u003eMonitor application logs for execution of git commands that include suspicious flags or path references originating from the application process.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-08-03T20:47:58Z","date_published":"2026-08-03T20:47:58Z","id":"https://feed.craftedsignal.io/briefs/2026-08-gitpython-argument-injection/","summary":"GitPython fails to sanitize keyword arguments passed to git commands, allowing attackers to perform arbitrary file overwrites and unauthorized file reads.","title":"GitPython Argument Injection in IndexFile and TagReference","url":"https://feed.craftedsignal.io/briefs/2026-08-gitpython-argument-injection/"}],"language":"en","title":"CraftedSignal Threat Feed - GitPython (\u003c= 3.1.56)","version":"https://jsonfeed.org/version/1.1"}