schollz croc up to 11.5.1 Receive File src/croc/croc.go recipientInitializeFile input validation

Summaryinfo

A vulnerability marked as problematic has been reported in schollz croc up to 11.5.1. This vulnerability affects the function recipientInitializeFile of the file src/croc/croc.go of the component Receive File Handler. This manipulation causes input validation. This vulnerability appears as CVE-2026-119298. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in schollz croc up to 11.5.1 and classified as problematic. Affected by this vulnerability is the function recipientInitializeFile of the file src/croc/croc.go of the component Receive File Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity, and availability. The summary by CVE is:

croc is a tool that allows any two computers to simply and securely transfer files and folders. Prior to 11.5.2, the receive-side file-readiness loop in src/croc/croc.go treats any sender-controlled basename beginning with croc-stdin- as a trusted text-transfer artifact even when SendingText is false. This skips askReceiveOverwrite and rename handling for a predictable exact-name collision in the receiver's working directory, allowing a remote sender whose transfer the user accepts to overwrite or truncate a matching regular file through recipientInitializeFile, or to remove and replace a matching destination with an empty file or an in-directory symlink through createEmptyFileAndFinish, without confirmation. The impact is limited to pre-existing names in the croc-stdin- namespace that the sender can predict; other filenames retain the prompt, dotfiles outside that namespace are not reachable, and symlink targets remain confined to the receive directory. This issue is fixed in version 11.5.2.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-119298 since 10/29/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 11.5.2 eliminates this vulnerability.

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Productinfo

Vendor

• schollz

Name

• croc

Version

• 11.5.0
• 11.5.1

Website

• Product: https://github.com/schollz/croc/

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