CVE-2026-11853
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk15th percentile — higher than 15% of all known CVEs
Summary
Debusine is an integrated solution to build, distribute, and maintain a Debian-based distribution. The parser used to read manifest files accepted arbitrary fully user-controlled paths, potentially allowing the creation of arbitrary symbolic links on a worker.
Risk Assessment
An attacker could exploit this vulnerability to overwrite any files that the worker user has access to, leading to data loss or system compromise.
Recommendation
It is recommended to restrict access to the mergeuploads function and implement path validation in the parser to prevent unauthorized symbolic link creation.
Original NVD description (English source)
Debusine is an integrated solution to build, distribute and maintain a Debian-based distribution. Debian source packages (.dsc) and upload artifacts (.changes) are manifest files that name the files that make up the artifact. The parser used to read these files in Debusine accepted arbitrary fully user-controlled paths. The mergeuploads task could be abused to create arbitrary symbolic links on a worker, overwriting any file that the worker user has access to.